1 /* 2 * Linux MegaRAID driver for SAS based RAID controllers 3 * 4 * Copyright (c) 2009-2013 LSI Corporation 5 * Copyright (c) 2013-2014 Avago Technologies 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 2 10 * of the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. 19 * 20 * FILE: megaraid_sas_fusion.c 21 * 22 * Authors: Avago Technologies 23 * Sumant Patro 24 * Adam Radford 25 * Kashyap Desai <kashyap.desai@avagotech.com> 26 * Sumit Saxena <sumit.saxena@avagotech.com> 27 * 28 * Send feedback to: megaraidlinux.pdl@avagotech.com 29 * 30 * Mail to: Avago Technologies, 350 West Trimble Road, Building 90, 31 * San Jose, California 95131 32 */ 33 34 #include <linux/kernel.h> 35 #include <linux/types.h> 36 #include <linux/pci.h> 37 #include <linux/list.h> 38 #include <linux/moduleparam.h> 39 #include <linux/module.h> 40 #include <linux/spinlock.h> 41 #include <linux/interrupt.h> 42 #include <linux/delay.h> 43 #include <linux/uio.h> 44 #include <linux/uaccess.h> 45 #include <linux/fs.h> 46 #include <linux/compat.h> 47 #include <linux/blkdev.h> 48 #include <linux/mutex.h> 49 #include <linux/poll.h> 50 #include <linux/vmalloc.h> 51 52 #include <scsi/scsi.h> 53 #include <scsi/scsi_cmnd.h> 54 #include <scsi/scsi_device.h> 55 #include <scsi/scsi_host.h> 56 #include <scsi/scsi_dbg.h> 57 #include <linux/dmi.h> 58 59 #include "megaraid_sas_fusion.h" 60 #include "megaraid_sas.h" 61 62 63 extern void megasas_free_cmds(struct megasas_instance *instance); 64 extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance 65 *instance); 66 extern void 67 megasas_complete_cmd(struct megasas_instance *instance, 68 struct megasas_cmd *cmd, u8 alt_status); 69 int 70 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 71 int seconds); 72 73 void 74 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd); 75 int megasas_alloc_cmds(struct megasas_instance *instance); 76 int 77 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs); 78 int 79 megasas_issue_polled(struct megasas_instance *instance, 80 struct megasas_cmd *cmd); 81 void 82 megasas_check_and_restore_queue_depth(struct megasas_instance *instance); 83 84 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); 85 void megaraid_sas_kill_hba(struct megasas_instance *instance); 86 87 extern u32 megasas_dbg_lvl; 88 int megasas_sriov_start_heartbeat(struct megasas_instance *instance, 89 int initial); 90 void megasas_start_timer(struct megasas_instance *instance); 91 extern struct megasas_mgmt_info megasas_mgmt_info; 92 extern unsigned int resetwaittime; 93 extern unsigned int dual_qdepth_disable; 94 static void megasas_free_rdpq_fusion(struct megasas_instance *instance); 95 static void megasas_free_reply_fusion(struct megasas_instance *instance); 96 static inline 97 void megasas_configure_queue_sizes(struct megasas_instance *instance); 98 99 /** 100 * megasas_check_same_4gb_region - check if allocation 101 * crosses same 4GB boundary or not 102 * @instance - adapter's soft instance 103 * start_addr - start address of DMA allocation 104 * size - size of allocation in bytes 105 * return - true : allocation does not cross same 106 * 4GB boundary 107 * false: allocation crosses same 108 * 4GB boundary 109 */ 110 static inline bool megasas_check_same_4gb_region 111 (struct megasas_instance *instance, dma_addr_t start_addr, size_t size) 112 { 113 dma_addr_t end_addr; 114 115 end_addr = start_addr + size; 116 117 if (upper_32_bits(start_addr) != upper_32_bits(end_addr)) { 118 dev_err(&instance->pdev->dev, 119 "Failed to get same 4GB boundary: start_addr: 0x%llx end_addr: 0x%llx\n", 120 (unsigned long long)start_addr, 121 (unsigned long long)end_addr); 122 return false; 123 } 124 125 return true; 126 } 127 128 /** 129 * megasas_enable_intr_fusion - Enables interrupts 130 * @regs: MFI register set 131 */ 132 void 133 megasas_enable_intr_fusion(struct megasas_instance *instance) 134 { 135 struct megasas_register_set __iomem *regs; 136 regs = instance->reg_set; 137 138 instance->mask_interrupts = 0; 139 /* For Thunderbolt/Invader also clear intr on enable */ 140 writel(~0, ®s->outbound_intr_status); 141 readl(®s->outbound_intr_status); 142 143 writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 144 145 /* Dummy readl to force pci flush */ 146 readl(®s->outbound_intr_mask); 147 } 148 149 /** 150 * megasas_disable_intr_fusion - Disables interrupt 151 * @regs: MFI register set 152 */ 153 void 154 megasas_disable_intr_fusion(struct megasas_instance *instance) 155 { 156 u32 mask = 0xFFFFFFFF; 157 u32 status; 158 struct megasas_register_set __iomem *regs; 159 regs = instance->reg_set; 160 instance->mask_interrupts = 1; 161 162 writel(mask, ®s->outbound_intr_mask); 163 /* Dummy readl to force pci flush */ 164 status = readl(®s->outbound_intr_mask); 165 } 166 167 int 168 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs) 169 { 170 u32 status; 171 /* 172 * Check if it is our interrupt 173 */ 174 status = readl(®s->outbound_intr_status); 175 176 if (status & 1) { 177 writel(status, ®s->outbound_intr_status); 178 readl(®s->outbound_intr_status); 179 return 1; 180 } 181 if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK)) 182 return 0; 183 184 return 1; 185 } 186 187 /** 188 * megasas_get_cmd_fusion - Get a command from the free pool 189 * @instance: Adapter soft state 190 * 191 * Returns a blk_tag indexed mpt frame 192 */ 193 inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance 194 *instance, u32 blk_tag) 195 { 196 struct fusion_context *fusion; 197 198 fusion = instance->ctrl_context; 199 return fusion->cmd_list[blk_tag]; 200 } 201 202 /** 203 * megasas_return_cmd_fusion - Return a cmd to free command pool 204 * @instance: Adapter soft state 205 * @cmd: Command packet to be returned to free command pool 206 */ 207 inline void megasas_return_cmd_fusion(struct megasas_instance *instance, 208 struct megasas_cmd_fusion *cmd) 209 { 210 cmd->scmd = NULL; 211 memset(cmd->io_request, 0, MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE); 212 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 213 cmd->cmd_completed = false; 214 } 215 216 /** 217 * megasas_fire_cmd_fusion - Sends command to the FW 218 * @instance: Adapter soft state 219 * @req_desc: 64bit Request descriptor 220 * 221 * Perform PCI Write. 222 */ 223 224 static void 225 megasas_fire_cmd_fusion(struct megasas_instance *instance, 226 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc) 227 { 228 #if defined(writeq) && defined(CONFIG_64BIT) 229 u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) | 230 le32_to_cpu(req_desc->u.low)); 231 232 writeq(req_data, &instance->reg_set->inbound_low_queue_port); 233 #else 234 unsigned long flags; 235 spin_lock_irqsave(&instance->hba_lock, flags); 236 writel(le32_to_cpu(req_desc->u.low), 237 &instance->reg_set->inbound_low_queue_port); 238 writel(le32_to_cpu(req_desc->u.high), 239 &instance->reg_set->inbound_high_queue_port); 240 mmiowb(); 241 spin_unlock_irqrestore(&instance->hba_lock, flags); 242 #endif 243 } 244 245 /** 246 * megasas_fusion_update_can_queue - Do all Adapter Queue depth related calculations here 247 * @instance: Adapter soft state 248 * fw_boot_context: Whether this function called during probe or after OCR 249 * 250 * This function is only for fusion controllers. 251 * Update host can queue, if firmware downgrade max supported firmware commands. 252 * Firmware upgrade case will be skiped because underlying firmware has 253 * more resource than exposed to the OS. 254 * 255 */ 256 static void 257 megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_context) 258 { 259 u16 cur_max_fw_cmds = 0; 260 u16 ldio_threshold = 0; 261 struct megasas_register_set __iomem *reg_set; 262 263 reg_set = instance->reg_set; 264 265 /* ventura FW does not fill outbound_scratch_pad_3 with queue depth */ 266 if (instance->adapter_type < VENTURA_SERIES) 267 cur_max_fw_cmds = 268 readl(&instance->reg_set->outbound_scratch_pad_3) & 0x00FFFF; 269 270 if (dual_qdepth_disable || !cur_max_fw_cmds) 271 cur_max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; 272 else 273 ldio_threshold = 274 (instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF) - MEGASAS_FUSION_IOCTL_CMDS; 275 276 dev_info(&instance->pdev->dev, 277 "Current firmware supports maximum commands: %d\t LDIO threshold: %d\n", 278 cur_max_fw_cmds, ldio_threshold); 279 280 if (fw_boot_context == OCR_CONTEXT) { 281 cur_max_fw_cmds = cur_max_fw_cmds - 1; 282 if (cur_max_fw_cmds < instance->max_fw_cmds) { 283 instance->cur_can_queue = 284 cur_max_fw_cmds - (MEGASAS_FUSION_INTERNAL_CMDS + 285 MEGASAS_FUSION_IOCTL_CMDS); 286 instance->host->can_queue = instance->cur_can_queue; 287 instance->ldio_threshold = ldio_threshold; 288 } 289 } else { 290 instance->max_fw_cmds = cur_max_fw_cmds; 291 instance->ldio_threshold = ldio_threshold; 292 293 if (reset_devices) 294 instance->max_fw_cmds = min(instance->max_fw_cmds, 295 (u16)MEGASAS_KDUMP_QUEUE_DEPTH); 296 /* 297 * Reduce the max supported cmds by 1. This is to ensure that the 298 * reply_q_sz (1 more than the max cmd that driver may send) 299 * does not exceed max cmds that the FW can support 300 */ 301 instance->max_fw_cmds = instance->max_fw_cmds-1; 302 } 303 } 304 /** 305 * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool 306 * @instance: Adapter soft state 307 */ 308 void 309 megasas_free_cmds_fusion(struct megasas_instance *instance) 310 { 311 int i; 312 struct fusion_context *fusion = instance->ctrl_context; 313 struct megasas_cmd_fusion *cmd; 314 315 if (fusion->sense) 316 dma_pool_free(fusion->sense_dma_pool, fusion->sense, 317 fusion->sense_phys_addr); 318 319 /* SG */ 320 if (fusion->cmd_list) { 321 for (i = 0; i < instance->max_mpt_cmds; i++) { 322 cmd = fusion->cmd_list[i]; 323 if (cmd) { 324 if (cmd->sg_frame) 325 dma_pool_free(fusion->sg_dma_pool, 326 cmd->sg_frame, 327 cmd->sg_frame_phys_addr); 328 } 329 kfree(cmd); 330 } 331 kfree(fusion->cmd_list); 332 } 333 334 if (fusion->sg_dma_pool) { 335 dma_pool_destroy(fusion->sg_dma_pool); 336 fusion->sg_dma_pool = NULL; 337 } 338 if (fusion->sense_dma_pool) { 339 dma_pool_destroy(fusion->sense_dma_pool); 340 fusion->sense_dma_pool = NULL; 341 } 342 343 344 /* Reply Frame, Desc*/ 345 if (instance->is_rdpq) 346 megasas_free_rdpq_fusion(instance); 347 else 348 megasas_free_reply_fusion(instance); 349 350 /* Request Frame, Desc*/ 351 if (fusion->req_frames_desc) 352 dma_free_coherent(&instance->pdev->dev, 353 fusion->request_alloc_sz, fusion->req_frames_desc, 354 fusion->req_frames_desc_phys); 355 if (fusion->io_request_frames) 356 dma_pool_free(fusion->io_request_frames_pool, 357 fusion->io_request_frames, 358 fusion->io_request_frames_phys); 359 if (fusion->io_request_frames_pool) { 360 dma_pool_destroy(fusion->io_request_frames_pool); 361 fusion->io_request_frames_pool = NULL; 362 } 363 } 364 365 /** 366 * megasas_create_sg_sense_fusion - Creates DMA pool for cmd frames 367 * @instance: Adapter soft state 368 * 369 */ 370 static int megasas_create_sg_sense_fusion(struct megasas_instance *instance) 371 { 372 int i; 373 u16 max_cmd; 374 struct fusion_context *fusion; 375 struct megasas_cmd_fusion *cmd; 376 int sense_sz; 377 u32 offset; 378 379 fusion = instance->ctrl_context; 380 max_cmd = instance->max_fw_cmds; 381 sense_sz = instance->max_mpt_cmds * SCSI_SENSE_BUFFERSIZE; 382 383 fusion->sg_dma_pool = 384 dma_pool_create("mr_sg", &instance->pdev->dev, 385 instance->max_chain_frame_sz, 386 MR_DEFAULT_NVME_PAGE_SIZE, 0); 387 /* SCSI_SENSE_BUFFERSIZE = 96 bytes */ 388 fusion->sense_dma_pool = 389 dma_pool_create("mr_sense", &instance->pdev->dev, 390 sense_sz, 64, 0); 391 392 if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) { 393 dev_err(&instance->pdev->dev, 394 "Failed from %s %d\n", __func__, __LINE__); 395 return -ENOMEM; 396 } 397 398 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool, 399 GFP_KERNEL, &fusion->sense_phys_addr); 400 if (!fusion->sense) { 401 dev_err(&instance->pdev->dev, 402 "failed from %s %d\n", __func__, __LINE__); 403 return -ENOMEM; 404 } 405 406 /* sense buffer, request frame and reply desc pool requires to be in 407 * same 4 gb region. Below function will check this. 408 * In case of failure, new pci pool will be created with updated 409 * alignment. 410 * Older allocation and pool will be destroyed. 411 * Alignment will be used such a way that next allocation if success, 412 * will always meet same 4gb region requirement. 413 * Actual requirement is not alignment, but we need start and end of 414 * DMA address must have same upper 32 bit address. 415 */ 416 417 if (!megasas_check_same_4gb_region(instance, fusion->sense_phys_addr, 418 sense_sz)) { 419 dma_pool_free(fusion->sense_dma_pool, fusion->sense, 420 fusion->sense_phys_addr); 421 fusion->sense = NULL; 422 dma_pool_destroy(fusion->sense_dma_pool); 423 424 fusion->sense_dma_pool = 425 dma_pool_create("mr_sense_align", &instance->pdev->dev, 426 sense_sz, roundup_pow_of_two(sense_sz), 427 0); 428 if (!fusion->sense_dma_pool) { 429 dev_err(&instance->pdev->dev, 430 "Failed from %s %d\n", __func__, __LINE__); 431 return -ENOMEM; 432 } 433 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool, 434 GFP_KERNEL, 435 &fusion->sense_phys_addr); 436 if (!fusion->sense) { 437 dev_err(&instance->pdev->dev, 438 "failed from %s %d\n", __func__, __LINE__); 439 return -ENOMEM; 440 } 441 } 442 443 /* 444 * Allocate and attach a frame to each of the commands in cmd_list 445 */ 446 for (i = 0; i < max_cmd; i++) { 447 cmd = fusion->cmd_list[i]; 448 cmd->sg_frame = dma_pool_alloc(fusion->sg_dma_pool, 449 GFP_KERNEL, &cmd->sg_frame_phys_addr); 450 451 offset = SCSI_SENSE_BUFFERSIZE * i; 452 cmd->sense = (u8 *)fusion->sense + offset; 453 cmd->sense_phys_addr = fusion->sense_phys_addr + offset; 454 455 if (!cmd->sg_frame) { 456 dev_err(&instance->pdev->dev, 457 "Failed from %s %d\n", __func__, __LINE__); 458 return -ENOMEM; 459 } 460 } 461 462 /* create sense buffer for the raid 1/10 fp */ 463 for (i = max_cmd; i < instance->max_mpt_cmds; i++) { 464 cmd = fusion->cmd_list[i]; 465 offset = SCSI_SENSE_BUFFERSIZE * i; 466 cmd->sense = (u8 *)fusion->sense + offset; 467 cmd->sense_phys_addr = fusion->sense_phys_addr + offset; 468 469 } 470 471 return 0; 472 } 473 474 int 475 megasas_alloc_cmdlist_fusion(struct megasas_instance *instance) 476 { 477 u32 max_mpt_cmd, i, j; 478 struct fusion_context *fusion; 479 480 fusion = instance->ctrl_context; 481 482 max_mpt_cmd = instance->max_mpt_cmds; 483 484 /* 485 * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers. 486 * Allocate the dynamic array first and then allocate individual 487 * commands. 488 */ 489 fusion->cmd_list = 490 kcalloc(max_mpt_cmd, sizeof(struct megasas_cmd_fusion *), 491 GFP_KERNEL); 492 if (!fusion->cmd_list) { 493 dev_err(&instance->pdev->dev, 494 "Failed from %s %d\n", __func__, __LINE__); 495 return -ENOMEM; 496 } 497 498 for (i = 0; i < max_mpt_cmd; i++) { 499 fusion->cmd_list[i] = kzalloc(sizeof(struct megasas_cmd_fusion), 500 GFP_KERNEL); 501 if (!fusion->cmd_list[i]) { 502 for (j = 0; j < i; j++) 503 kfree(fusion->cmd_list[j]); 504 kfree(fusion->cmd_list); 505 dev_err(&instance->pdev->dev, 506 "Failed from %s %d\n", __func__, __LINE__); 507 return -ENOMEM; 508 } 509 } 510 511 return 0; 512 } 513 int 514 megasas_alloc_request_fusion(struct megasas_instance *instance) 515 { 516 struct fusion_context *fusion; 517 518 fusion = instance->ctrl_context; 519 520 retry_alloc: 521 fusion->io_request_frames_pool = 522 dma_pool_create("mr_ioreq", &instance->pdev->dev, 523 fusion->io_frames_alloc_sz, 16, 0); 524 525 if (!fusion->io_request_frames_pool) { 526 dev_err(&instance->pdev->dev, 527 "Failed from %s %d\n", __func__, __LINE__); 528 return -ENOMEM; 529 } 530 531 fusion->io_request_frames = 532 dma_pool_alloc(fusion->io_request_frames_pool, 533 GFP_KERNEL, &fusion->io_request_frames_phys); 534 if (!fusion->io_request_frames) { 535 if (instance->max_fw_cmds >= (MEGASAS_REDUCE_QD_COUNT * 2)) { 536 instance->max_fw_cmds -= MEGASAS_REDUCE_QD_COUNT; 537 dma_pool_destroy(fusion->io_request_frames_pool); 538 megasas_configure_queue_sizes(instance); 539 goto retry_alloc; 540 } else { 541 dev_err(&instance->pdev->dev, 542 "Failed from %s %d\n", __func__, __LINE__); 543 return -ENOMEM; 544 } 545 } 546 547 if (!megasas_check_same_4gb_region(instance, 548 fusion->io_request_frames_phys, 549 fusion->io_frames_alloc_sz)) { 550 dma_pool_free(fusion->io_request_frames_pool, 551 fusion->io_request_frames, 552 fusion->io_request_frames_phys); 553 fusion->io_request_frames = NULL; 554 dma_pool_destroy(fusion->io_request_frames_pool); 555 556 fusion->io_request_frames_pool = 557 dma_pool_create("mr_ioreq_align", 558 &instance->pdev->dev, 559 fusion->io_frames_alloc_sz, 560 roundup_pow_of_two(fusion->io_frames_alloc_sz), 561 0); 562 563 if (!fusion->io_request_frames_pool) { 564 dev_err(&instance->pdev->dev, 565 "Failed from %s %d\n", __func__, __LINE__); 566 return -ENOMEM; 567 } 568 569 fusion->io_request_frames = 570 dma_pool_alloc(fusion->io_request_frames_pool, 571 GFP_KERNEL, 572 &fusion->io_request_frames_phys); 573 574 if (!fusion->io_request_frames) { 575 dev_err(&instance->pdev->dev, 576 "Failed from %s %d\n", __func__, __LINE__); 577 return -ENOMEM; 578 } 579 } 580 581 fusion->req_frames_desc = 582 dma_alloc_coherent(&instance->pdev->dev, 583 fusion->request_alloc_sz, 584 &fusion->req_frames_desc_phys, GFP_KERNEL); 585 if (!fusion->req_frames_desc) { 586 dev_err(&instance->pdev->dev, 587 "Failed from %s %d\n", __func__, __LINE__); 588 return -ENOMEM; 589 } 590 591 return 0; 592 } 593 594 int 595 megasas_alloc_reply_fusion(struct megasas_instance *instance) 596 { 597 int i, count; 598 struct fusion_context *fusion; 599 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; 600 fusion = instance->ctrl_context; 601 602 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 603 fusion->reply_frames_desc_pool = 604 dma_pool_create("mr_reply", &instance->pdev->dev, 605 fusion->reply_alloc_sz * count, 16, 0); 606 607 if (!fusion->reply_frames_desc_pool) { 608 dev_err(&instance->pdev->dev, 609 "Failed from %s %d\n", __func__, __LINE__); 610 return -ENOMEM; 611 } 612 613 fusion->reply_frames_desc[0] = 614 dma_pool_alloc(fusion->reply_frames_desc_pool, 615 GFP_KERNEL, &fusion->reply_frames_desc_phys[0]); 616 if (!fusion->reply_frames_desc[0]) { 617 dev_err(&instance->pdev->dev, 618 "Failed from %s %d\n", __func__, __LINE__); 619 return -ENOMEM; 620 } 621 622 if (!megasas_check_same_4gb_region(instance, 623 fusion->reply_frames_desc_phys[0], 624 (fusion->reply_alloc_sz * count))) { 625 dma_pool_free(fusion->reply_frames_desc_pool, 626 fusion->reply_frames_desc[0], 627 fusion->reply_frames_desc_phys[0]); 628 fusion->reply_frames_desc[0] = NULL; 629 dma_pool_destroy(fusion->reply_frames_desc_pool); 630 631 fusion->reply_frames_desc_pool = 632 dma_pool_create("mr_reply_align", 633 &instance->pdev->dev, 634 fusion->reply_alloc_sz * count, 635 roundup_pow_of_two(fusion->reply_alloc_sz * count), 636 0); 637 638 if (!fusion->reply_frames_desc_pool) { 639 dev_err(&instance->pdev->dev, 640 "Failed from %s %d\n", __func__, __LINE__); 641 return -ENOMEM; 642 } 643 644 fusion->reply_frames_desc[0] = 645 dma_pool_alloc(fusion->reply_frames_desc_pool, 646 GFP_KERNEL, 647 &fusion->reply_frames_desc_phys[0]); 648 649 if (!fusion->reply_frames_desc[0]) { 650 dev_err(&instance->pdev->dev, 651 "Failed from %s %d\n", __func__, __LINE__); 652 return -ENOMEM; 653 } 654 } 655 656 reply_desc = fusion->reply_frames_desc[0]; 657 for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++) 658 reply_desc->Words = cpu_to_le64(ULLONG_MAX); 659 660 /* This is not a rdpq mode, but driver still populate 661 * reply_frame_desc array to use same msix index in ISR path. 662 */ 663 for (i = 0; i < (count - 1); i++) 664 fusion->reply_frames_desc[i + 1] = 665 fusion->reply_frames_desc[i] + 666 (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION); 667 668 return 0; 669 } 670 671 int 672 megasas_alloc_rdpq_fusion(struct megasas_instance *instance) 673 { 674 int i, j, k, msix_count; 675 struct fusion_context *fusion; 676 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; 677 union MPI2_REPLY_DESCRIPTORS_UNION *rdpq_chunk_virt[RDPQ_MAX_CHUNK_COUNT]; 678 dma_addr_t rdpq_chunk_phys[RDPQ_MAX_CHUNK_COUNT]; 679 u8 dma_alloc_count, abs_index; 680 u32 chunk_size, array_size, offset; 681 682 fusion = instance->ctrl_context; 683 chunk_size = fusion->reply_alloc_sz * RDPQ_MAX_INDEX_IN_ONE_CHUNK; 684 array_size = sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * 685 MAX_MSIX_QUEUES_FUSION; 686 687 fusion->rdpq_virt = pci_zalloc_consistent(instance->pdev, array_size, 688 &fusion->rdpq_phys); 689 if (!fusion->rdpq_virt) { 690 dev_err(&instance->pdev->dev, 691 "Failed from %s %d\n", __func__, __LINE__); 692 return -ENOMEM; 693 } 694 695 msix_count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 696 697 fusion->reply_frames_desc_pool = dma_pool_create("mr_rdpq", 698 &instance->pdev->dev, 699 chunk_size, 16, 0); 700 fusion->reply_frames_desc_pool_align = 701 dma_pool_create("mr_rdpq_align", 702 &instance->pdev->dev, 703 chunk_size, 704 roundup_pow_of_two(chunk_size), 705 0); 706 707 if (!fusion->reply_frames_desc_pool || 708 !fusion->reply_frames_desc_pool_align) { 709 dev_err(&instance->pdev->dev, 710 "Failed from %s %d\n", __func__, __LINE__); 711 return -ENOMEM; 712 } 713 714 /* 715 * For INVADER_SERIES each set of 8 reply queues(0-7, 8-15, ..) and 716 * VENTURA_SERIES each set of 16 reply queues(0-15, 16-31, ..) should be 717 * within 4GB boundary and also reply queues in a set must have same 718 * upper 32-bits in their memory address. so here driver is allocating the 719 * DMA'able memory for reply queues according. Driver uses limitation of 720 * VENTURA_SERIES to manage INVADER_SERIES as well. 721 */ 722 dma_alloc_count = DIV_ROUND_UP(msix_count, RDPQ_MAX_INDEX_IN_ONE_CHUNK); 723 724 for (i = 0; i < dma_alloc_count; i++) { 725 rdpq_chunk_virt[i] = 726 dma_pool_alloc(fusion->reply_frames_desc_pool, 727 GFP_KERNEL, &rdpq_chunk_phys[i]); 728 if (!rdpq_chunk_virt[i]) { 729 dev_err(&instance->pdev->dev, 730 "Failed from %s %d\n", __func__, __LINE__); 731 return -ENOMEM; 732 } 733 /* reply desc pool requires to be in same 4 gb region. 734 * Below function will check this. 735 * In case of failure, new pci pool will be created with updated 736 * alignment. 737 * For RDPQ buffers, driver always allocate two separate pci pool. 738 * Alignment will be used such a way that next allocation if 739 * success, will always meet same 4gb region requirement. 740 * rdpq_tracker keep track of each buffer's physical, 741 * virtual address and pci pool descriptor. It will help driver 742 * while freeing the resources. 743 * 744 */ 745 if (!megasas_check_same_4gb_region(instance, rdpq_chunk_phys[i], 746 chunk_size)) { 747 dma_pool_free(fusion->reply_frames_desc_pool, 748 rdpq_chunk_virt[i], 749 rdpq_chunk_phys[i]); 750 751 rdpq_chunk_virt[i] = 752 dma_pool_alloc(fusion->reply_frames_desc_pool_align, 753 GFP_KERNEL, &rdpq_chunk_phys[i]); 754 if (!rdpq_chunk_virt[i]) { 755 dev_err(&instance->pdev->dev, 756 "Failed from %s %d\n", 757 __func__, __LINE__); 758 return -ENOMEM; 759 } 760 fusion->rdpq_tracker[i].dma_pool_ptr = 761 fusion->reply_frames_desc_pool_align; 762 } else { 763 fusion->rdpq_tracker[i].dma_pool_ptr = 764 fusion->reply_frames_desc_pool; 765 } 766 767 fusion->rdpq_tracker[i].pool_entry_phys = rdpq_chunk_phys[i]; 768 fusion->rdpq_tracker[i].pool_entry_virt = rdpq_chunk_virt[i]; 769 } 770 771 for (k = 0; k < dma_alloc_count; k++) { 772 for (i = 0; i < RDPQ_MAX_INDEX_IN_ONE_CHUNK; i++) { 773 abs_index = (k * RDPQ_MAX_INDEX_IN_ONE_CHUNK) + i; 774 775 if (abs_index == msix_count) 776 break; 777 offset = fusion->reply_alloc_sz * i; 778 fusion->rdpq_virt[abs_index].RDPQBaseAddress = 779 cpu_to_le64(rdpq_chunk_phys[k] + offset); 780 fusion->reply_frames_desc_phys[abs_index] = 781 rdpq_chunk_phys[k] + offset; 782 fusion->reply_frames_desc[abs_index] = 783 (union MPI2_REPLY_DESCRIPTORS_UNION *)((u8 *)rdpq_chunk_virt[k] + offset); 784 785 reply_desc = fusion->reply_frames_desc[abs_index]; 786 for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++) 787 reply_desc->Words = ULLONG_MAX; 788 } 789 } 790 791 return 0; 792 } 793 794 static void 795 megasas_free_rdpq_fusion(struct megasas_instance *instance) { 796 797 int i; 798 struct fusion_context *fusion; 799 800 fusion = instance->ctrl_context; 801 802 for (i = 0; i < RDPQ_MAX_CHUNK_COUNT; i++) { 803 if (fusion->rdpq_tracker[i].pool_entry_virt) 804 dma_pool_free(fusion->rdpq_tracker[i].dma_pool_ptr, 805 fusion->rdpq_tracker[i].pool_entry_virt, 806 fusion->rdpq_tracker[i].pool_entry_phys); 807 808 } 809 810 if (fusion->reply_frames_desc_pool) 811 dma_pool_destroy(fusion->reply_frames_desc_pool); 812 if (fusion->reply_frames_desc_pool_align) 813 dma_pool_destroy(fusion->reply_frames_desc_pool_align); 814 815 if (fusion->rdpq_virt) 816 pci_free_consistent(instance->pdev, 817 sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION, 818 fusion->rdpq_virt, fusion->rdpq_phys); 819 } 820 821 static void 822 megasas_free_reply_fusion(struct megasas_instance *instance) { 823 824 struct fusion_context *fusion; 825 826 fusion = instance->ctrl_context; 827 828 if (fusion->reply_frames_desc[0]) 829 dma_pool_free(fusion->reply_frames_desc_pool, 830 fusion->reply_frames_desc[0], 831 fusion->reply_frames_desc_phys[0]); 832 833 if (fusion->reply_frames_desc_pool) 834 dma_pool_destroy(fusion->reply_frames_desc_pool); 835 836 } 837 838 839 /** 840 * megasas_alloc_cmds_fusion - Allocates the command packets 841 * @instance: Adapter soft state 842 * 843 * 844 * Each frame has a 32-bit field called context. This context is used to get 845 * back the megasas_cmd_fusion from the frame when a frame gets completed 846 * In this driver, the 32 bit values are the indices into an array cmd_list. 847 * This array is used only to look up the megasas_cmd_fusion given the context. 848 * The free commands themselves are maintained in a linked list called cmd_pool. 849 * 850 * cmds are formed in the io_request and sg_frame members of the 851 * megasas_cmd_fusion. The context field is used to get a request descriptor 852 * and is used as SMID of the cmd. 853 * SMID value range is from 1 to max_fw_cmds. 854 */ 855 int 856 megasas_alloc_cmds_fusion(struct megasas_instance *instance) 857 { 858 int i; 859 struct fusion_context *fusion; 860 struct megasas_cmd_fusion *cmd; 861 u32 offset; 862 dma_addr_t io_req_base_phys; 863 u8 *io_req_base; 864 865 866 fusion = instance->ctrl_context; 867 868 if (megasas_alloc_request_fusion(instance)) 869 goto fail_exit; 870 871 if (instance->is_rdpq) { 872 if (megasas_alloc_rdpq_fusion(instance)) 873 goto fail_exit; 874 } else 875 if (megasas_alloc_reply_fusion(instance)) 876 goto fail_exit; 877 878 if (megasas_alloc_cmdlist_fusion(instance)) 879 goto fail_exit; 880 881 dev_info(&instance->pdev->dev, "Configured max firmware commands: %d\n", 882 instance->max_fw_cmds); 883 884 /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */ 885 io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; 886 io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; 887 888 /* 889 * Add all the commands to command pool (fusion->cmd_pool) 890 */ 891 892 /* SMID 0 is reserved. Set SMID/index from 1 */ 893 for (i = 0; i < instance->max_mpt_cmds; i++) { 894 cmd = fusion->cmd_list[i]; 895 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i; 896 memset(cmd, 0, sizeof(struct megasas_cmd_fusion)); 897 cmd->index = i + 1; 898 cmd->scmd = NULL; 899 cmd->sync_cmd_idx = 900 (i >= instance->max_scsi_cmds && i < instance->max_fw_cmds) ? 901 (i - instance->max_scsi_cmds) : 902 (u32)ULONG_MAX; /* Set to Invalid */ 903 cmd->instance = instance; 904 cmd->io_request = 905 (struct MPI2_RAID_SCSI_IO_REQUEST *) 906 (io_req_base + offset); 907 memset(cmd->io_request, 0, 908 sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)); 909 cmd->io_request_phys_addr = io_req_base_phys + offset; 910 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 911 } 912 913 if (megasas_create_sg_sense_fusion(instance)) 914 goto fail_exit; 915 916 return 0; 917 918 fail_exit: 919 megasas_free_cmds_fusion(instance); 920 return -ENOMEM; 921 } 922 923 /** 924 * wait_and_poll - Issues a polling command 925 * @instance: Adapter soft state 926 * @cmd: Command packet to be issued 927 * 928 * For polling, MFI requires the cmd_status to be set to 0xFF before posting. 929 */ 930 int 931 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 932 int seconds) 933 { 934 int i; 935 struct megasas_header *frame_hdr = &cmd->frame->hdr; 936 struct fusion_context *fusion; 937 938 u32 msecs = seconds * 1000; 939 940 fusion = instance->ctrl_context; 941 /* 942 * Wait for cmd_status to change 943 */ 944 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) { 945 rmb(); 946 msleep(20); 947 } 948 949 if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS) 950 return DCMD_TIMEOUT; 951 else if (frame_hdr->cmd_status == MFI_STAT_OK) 952 return DCMD_SUCCESS; 953 else 954 return DCMD_FAILED; 955 } 956 957 /** 958 * megasas_ioc_init_fusion - Initializes the FW 959 * @instance: Adapter soft state 960 * 961 * Issues the IOC Init cmd 962 */ 963 int 964 megasas_ioc_init_fusion(struct megasas_instance *instance) 965 { 966 struct megasas_init_frame *init_frame; 967 struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL; 968 dma_addr_t ioc_init_handle; 969 struct megasas_cmd *cmd; 970 u8 ret, cur_rdpq_mode; 971 struct fusion_context *fusion; 972 union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc; 973 int i; 974 struct megasas_header *frame_hdr; 975 const char *sys_info; 976 MFI_CAPABILITIES *drv_ops; 977 u32 scratch_pad_2; 978 ktime_t time; 979 bool cur_fw_64bit_dma_capable; 980 981 fusion = instance->ctrl_context; 982 983 ioc_init_handle = fusion->ioc_init_request_phys; 984 IOCInitMessage = fusion->ioc_init_request; 985 986 cmd = fusion->ioc_init_cmd; 987 988 scratch_pad_2 = readl 989 (&instance->reg_set->outbound_scratch_pad_2); 990 991 cur_rdpq_mode = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ? 1 : 0; 992 993 if (instance->adapter_type == INVADER_SERIES) { 994 cur_fw_64bit_dma_capable = 995 (scratch_pad_2 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET) ? true : false; 996 997 if (instance->consistent_mask_64bit && !cur_fw_64bit_dma_capable) { 998 dev_err(&instance->pdev->dev, "Driver was operating on 64bit " 999 "DMA mask, but upcoming FW does not support 64bit DMA mask\n"); 1000 megaraid_sas_kill_hba(instance); 1001 ret = 1; 1002 goto fail_fw_init; 1003 } 1004 } 1005 1006 if (instance->is_rdpq && !cur_rdpq_mode) { 1007 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*" 1008 " from RDPQ mode to non RDPQ mode\n"); 1009 ret = 1; 1010 goto fail_fw_init; 1011 } 1012 1013 instance->fw_sync_cache_support = (scratch_pad_2 & 1014 MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0; 1015 dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n", 1016 instance->fw_sync_cache_support ? "Yes" : "No"); 1017 1018 memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST)); 1019 1020 IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT; 1021 IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER; 1022 IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION); 1023 IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION); 1024 IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4); 1025 1026 IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth); 1027 IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ? 1028 cpu_to_le64(fusion->rdpq_phys) : 1029 cpu_to_le64(fusion->reply_frames_desc_phys[0]); 1030 IOCInitMessage->MsgFlags = instance->is_rdpq ? 1031 MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0; 1032 IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys); 1033 IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr)); 1034 IOCInitMessage->HostMSIxVectors = instance->msix_vectors; 1035 IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT; 1036 1037 time = ktime_get_real(); 1038 /* Convert to milliseconds as per FW requirement */ 1039 IOCInitMessage->TimeStamp = cpu_to_le64(ktime_to_ms(time)); 1040 1041 init_frame = (struct megasas_init_frame *)cmd->frame; 1042 memset(init_frame, 0, IOC_INIT_FRAME_SIZE); 1043 1044 frame_hdr = &cmd->frame->hdr; 1045 frame_hdr->cmd_status = 0xFF; 1046 frame_hdr->flags = cpu_to_le16( 1047 le16_to_cpu(frame_hdr->flags) | 1048 MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); 1049 1050 init_frame->cmd = MFI_CMD_INIT; 1051 init_frame->cmd_status = 0xFF; 1052 1053 drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations); 1054 1055 /* driver support Extended MSIX */ 1056 if (instance->adapter_type >= INVADER_SERIES) 1057 drv_ops->mfi_capabilities.support_additional_msix = 1; 1058 /* driver supports HA / Remote LUN over Fast Path interface */ 1059 drv_ops->mfi_capabilities.support_fp_remote_lun = 1; 1060 1061 drv_ops->mfi_capabilities.support_max_255lds = 1; 1062 drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1; 1063 drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1; 1064 1065 if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN) 1066 drv_ops->mfi_capabilities.support_ext_io_size = 1; 1067 1068 drv_ops->mfi_capabilities.support_fp_rlbypass = 1; 1069 if (!dual_qdepth_disable) 1070 drv_ops->mfi_capabilities.support_ext_queue_depth = 1; 1071 1072 drv_ops->mfi_capabilities.support_qd_throttling = 1; 1073 drv_ops->mfi_capabilities.support_pd_map_target_id = 1; 1074 drv_ops->mfi_capabilities.support_nvme_passthru = 1; 1075 1076 if (instance->consistent_mask_64bit) 1077 drv_ops->mfi_capabilities.support_64bit_mode = 1; 1078 1079 /* Convert capability to LE32 */ 1080 cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities); 1081 1082 sys_info = dmi_get_system_info(DMI_PRODUCT_UUID); 1083 if (instance->system_info_buf && sys_info) { 1084 memcpy(instance->system_info_buf->systemId, sys_info, 1085 strlen(sys_info) > 64 ? 64 : strlen(sys_info)); 1086 instance->system_info_buf->systemIdLength = 1087 strlen(sys_info) > 64 ? 64 : strlen(sys_info); 1088 init_frame->system_info_lo = cpu_to_le32(lower_32_bits(instance->system_info_h)); 1089 init_frame->system_info_hi = cpu_to_le32(upper_32_bits(instance->system_info_h)); 1090 } 1091 1092 init_frame->queue_info_new_phys_addr_hi = 1093 cpu_to_le32(upper_32_bits(ioc_init_handle)); 1094 init_frame->queue_info_new_phys_addr_lo = 1095 cpu_to_le32(lower_32_bits(ioc_init_handle)); 1096 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST)); 1097 1098 req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr)); 1099 req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr)); 1100 req_desc.MFAIo.RequestFlags = 1101 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA << 1102 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 1103 1104 /* 1105 * disable the intr before firing the init frame 1106 */ 1107 instance->instancet->disable_intr(instance); 1108 1109 for (i = 0; i < (10 * 1000); i += 20) { 1110 if (readl(&instance->reg_set->doorbell) & 1) 1111 msleep(20); 1112 else 1113 break; 1114 } 1115 1116 megasas_fire_cmd_fusion(instance, &req_desc); 1117 1118 wait_and_poll(instance, cmd, MFI_POLL_TIMEOUT_SECS); 1119 1120 frame_hdr = &cmd->frame->hdr; 1121 if (frame_hdr->cmd_status != 0) { 1122 ret = 1; 1123 goto fail_fw_init; 1124 } 1125 1126 return 0; 1127 1128 fail_fw_init: 1129 dev_err(&instance->pdev->dev, 1130 "Init cmd return status FAILED for SCSI host %d\n", 1131 instance->host->host_no); 1132 1133 return ret; 1134 } 1135 1136 /** 1137 * megasas_sync_pd_seq_num - JBOD SEQ MAP 1138 * @instance: Adapter soft state 1139 * @pend: set to 1, if it is pended jbod map. 1140 * 1141 * Issue Jbod map to the firmware. If it is pended command, 1142 * issue command and return. If it is first instance of jbod map 1143 * issue and receive command. 1144 */ 1145 int 1146 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) { 1147 int ret = 0; 1148 u32 pd_seq_map_sz; 1149 struct megasas_cmd *cmd; 1150 struct megasas_dcmd_frame *dcmd; 1151 struct fusion_context *fusion = instance->ctrl_context; 1152 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 1153 dma_addr_t pd_seq_h; 1154 1155 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)]; 1156 pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)]; 1157 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 1158 (sizeof(struct MR_PD_CFG_SEQ) * 1159 (MAX_PHYSICAL_DEVICES - 1)); 1160 1161 cmd = megasas_get_cmd(instance); 1162 if (!cmd) { 1163 dev_err(&instance->pdev->dev, 1164 "Could not get mfi cmd. Fail from %s %d\n", 1165 __func__, __LINE__); 1166 return -ENOMEM; 1167 } 1168 1169 dcmd = &cmd->frame->dcmd; 1170 1171 memset(pd_sync, 0, pd_seq_map_sz); 1172 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1173 1174 if (pend) { 1175 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG; 1176 dcmd->flags = MFI_FRAME_DIR_WRITE; 1177 instance->jbod_seq_cmd = cmd; 1178 } else { 1179 dcmd->flags = MFI_FRAME_DIR_READ; 1180 } 1181 1182 dcmd->cmd = MFI_CMD_DCMD; 1183 dcmd->cmd_status = 0xFF; 1184 dcmd->sge_count = 1; 1185 dcmd->timeout = 0; 1186 dcmd->pad_0 = 0; 1187 dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz); 1188 dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO); 1189 1190 megasas_set_dma_settings(instance, dcmd, pd_seq_h, pd_seq_map_sz); 1191 1192 if (pend) { 1193 instance->instancet->issue_dcmd(instance, cmd); 1194 return 0; 1195 } 1196 1197 /* Below code is only for non pended DCMD */ 1198 if (!instance->mask_interrupts) 1199 ret = megasas_issue_blocked_cmd(instance, cmd, 1200 MFI_IO_TIMEOUT_SECS); 1201 else 1202 ret = megasas_issue_polled(instance, cmd); 1203 1204 if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) { 1205 dev_warn(&instance->pdev->dev, 1206 "driver supports max %d JBOD, but FW reports %d\n", 1207 MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count)); 1208 ret = -EINVAL; 1209 } 1210 1211 if (ret == DCMD_TIMEOUT) 1212 megaraid_sas_kill_hba(instance); 1213 1214 if (ret == DCMD_SUCCESS) 1215 instance->pd_seq_map_id++; 1216 1217 megasas_return_cmd(instance, cmd); 1218 return ret; 1219 } 1220 1221 /* 1222 * megasas_get_ld_map_info - Returns FW's ld_map structure 1223 * @instance: Adapter soft state 1224 * @pend: Pend the command or not 1225 * Issues an internal command (DCMD) to get the FW's controller PD 1226 * list structure. This information is mainly used to find out SYSTEM 1227 * supported by the FW. 1228 * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO 1229 * dcmd.mbox.b[0] - number of LDs being sync'd 1230 * dcmd.mbox.b[1] - 0 - complete command immediately. 1231 * - 1 - pend till config change 1232 * dcmd.mbox.b[2] - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP 1233 * - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and 1234 * uses extended struct MR_FW_RAID_MAP_EXT 1235 */ 1236 static int 1237 megasas_get_ld_map_info(struct megasas_instance *instance) 1238 { 1239 int ret = 0; 1240 struct megasas_cmd *cmd; 1241 struct megasas_dcmd_frame *dcmd; 1242 void *ci; 1243 dma_addr_t ci_h = 0; 1244 u32 size_map_info; 1245 struct fusion_context *fusion; 1246 1247 cmd = megasas_get_cmd(instance); 1248 1249 if (!cmd) { 1250 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n"); 1251 return -ENOMEM; 1252 } 1253 1254 fusion = instance->ctrl_context; 1255 1256 if (!fusion) { 1257 megasas_return_cmd(instance, cmd); 1258 return -ENXIO; 1259 } 1260 1261 dcmd = &cmd->frame->dcmd; 1262 1263 size_map_info = fusion->current_map_sz; 1264 1265 ci = (void *) fusion->ld_map[(instance->map_id & 1)]; 1266 ci_h = fusion->ld_map_phys[(instance->map_id & 1)]; 1267 1268 if (!ci) { 1269 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n"); 1270 megasas_return_cmd(instance, cmd); 1271 return -ENOMEM; 1272 } 1273 1274 memset(ci, 0, fusion->max_map_sz); 1275 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1276 dcmd->cmd = MFI_CMD_DCMD; 1277 dcmd->cmd_status = 0xFF; 1278 dcmd->sge_count = 1; 1279 dcmd->flags = MFI_FRAME_DIR_READ; 1280 dcmd->timeout = 0; 1281 dcmd->pad_0 = 0; 1282 dcmd->data_xfer_len = cpu_to_le32(size_map_info); 1283 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO); 1284 1285 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info); 1286 1287 if (!instance->mask_interrupts) 1288 ret = megasas_issue_blocked_cmd(instance, cmd, 1289 MFI_IO_TIMEOUT_SECS); 1290 else 1291 ret = megasas_issue_polled(instance, cmd); 1292 1293 if (ret == DCMD_TIMEOUT) 1294 megaraid_sas_kill_hba(instance); 1295 1296 megasas_return_cmd(instance, cmd); 1297 1298 return ret; 1299 } 1300 1301 u8 1302 megasas_get_map_info(struct megasas_instance *instance) 1303 { 1304 struct fusion_context *fusion = instance->ctrl_context; 1305 1306 fusion->fast_path_io = 0; 1307 if (!megasas_get_ld_map_info(instance)) { 1308 if (MR_ValidateMapInfo(instance, instance->map_id)) { 1309 fusion->fast_path_io = 1; 1310 return 0; 1311 } 1312 } 1313 return 1; 1314 } 1315 1316 /* 1317 * megasas_sync_map_info - Returns FW's ld_map structure 1318 * @instance: Adapter soft state 1319 * 1320 * Issues an internal command (DCMD) to get the FW's controller PD 1321 * list structure. This information is mainly used to find out SYSTEM 1322 * supported by the FW. 1323 */ 1324 int 1325 megasas_sync_map_info(struct megasas_instance *instance) 1326 { 1327 int i; 1328 struct megasas_cmd *cmd; 1329 struct megasas_dcmd_frame *dcmd; 1330 u16 num_lds; 1331 u32 size_sync_info; 1332 struct fusion_context *fusion; 1333 struct MR_LD_TARGET_SYNC *ci = NULL; 1334 struct MR_DRV_RAID_MAP_ALL *map; 1335 struct MR_LD_RAID *raid; 1336 struct MR_LD_TARGET_SYNC *ld_sync; 1337 dma_addr_t ci_h = 0; 1338 u32 size_map_info; 1339 1340 cmd = megasas_get_cmd(instance); 1341 1342 if (!cmd) { 1343 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n"); 1344 return -ENOMEM; 1345 } 1346 1347 fusion = instance->ctrl_context; 1348 1349 if (!fusion) { 1350 megasas_return_cmd(instance, cmd); 1351 return 1; 1352 } 1353 1354 map = fusion->ld_drv_map[instance->map_id & 1]; 1355 1356 num_lds = le16_to_cpu(map->raidMap.ldCount); 1357 1358 dcmd = &cmd->frame->dcmd; 1359 1360 size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds; 1361 1362 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1363 1364 ci = (struct MR_LD_TARGET_SYNC *) 1365 fusion->ld_map[(instance->map_id - 1) & 1]; 1366 memset(ci, 0, fusion->max_map_sz); 1367 1368 ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1]; 1369 1370 ld_sync = (struct MR_LD_TARGET_SYNC *)ci; 1371 1372 for (i = 0; i < num_lds; i++, ld_sync++) { 1373 raid = MR_LdRaidGet(i, map); 1374 ld_sync->targetId = MR_GetLDTgtId(i, map); 1375 ld_sync->seqNum = raid->seqNum; 1376 } 1377 1378 size_map_info = fusion->current_map_sz; 1379 1380 dcmd->cmd = MFI_CMD_DCMD; 1381 dcmd->cmd_status = 0xFF; 1382 dcmd->sge_count = 1; 1383 dcmd->flags = MFI_FRAME_DIR_WRITE; 1384 dcmd->timeout = 0; 1385 dcmd->pad_0 = 0; 1386 dcmd->data_xfer_len = cpu_to_le32(size_map_info); 1387 dcmd->mbox.b[0] = num_lds; 1388 dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG; 1389 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO); 1390 1391 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info); 1392 1393 instance->map_update_cmd = cmd; 1394 1395 instance->instancet->issue_dcmd(instance, cmd); 1396 1397 return 0; 1398 } 1399 1400 /* 1401 * meagasas_display_intel_branding - Display branding string 1402 * @instance: per adapter object 1403 * 1404 * Return nothing. 1405 */ 1406 static void 1407 megasas_display_intel_branding(struct megasas_instance *instance) 1408 { 1409 if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL) 1410 return; 1411 1412 switch (instance->pdev->device) { 1413 case PCI_DEVICE_ID_LSI_INVADER: 1414 switch (instance->pdev->subsystem_device) { 1415 case MEGARAID_INTEL_RS3DC080_SSDID: 1416 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1417 instance->host->host_no, 1418 MEGARAID_INTEL_RS3DC080_BRANDING); 1419 break; 1420 case MEGARAID_INTEL_RS3DC040_SSDID: 1421 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1422 instance->host->host_no, 1423 MEGARAID_INTEL_RS3DC040_BRANDING); 1424 break; 1425 case MEGARAID_INTEL_RS3SC008_SSDID: 1426 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1427 instance->host->host_no, 1428 MEGARAID_INTEL_RS3SC008_BRANDING); 1429 break; 1430 case MEGARAID_INTEL_RS3MC044_SSDID: 1431 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1432 instance->host->host_no, 1433 MEGARAID_INTEL_RS3MC044_BRANDING); 1434 break; 1435 default: 1436 break; 1437 } 1438 break; 1439 case PCI_DEVICE_ID_LSI_FURY: 1440 switch (instance->pdev->subsystem_device) { 1441 case MEGARAID_INTEL_RS3WC080_SSDID: 1442 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1443 instance->host->host_no, 1444 MEGARAID_INTEL_RS3WC080_BRANDING); 1445 break; 1446 case MEGARAID_INTEL_RS3WC040_SSDID: 1447 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1448 instance->host->host_no, 1449 MEGARAID_INTEL_RS3WC040_BRANDING); 1450 break; 1451 default: 1452 break; 1453 } 1454 break; 1455 case PCI_DEVICE_ID_LSI_CUTLASS_52: 1456 case PCI_DEVICE_ID_LSI_CUTLASS_53: 1457 switch (instance->pdev->subsystem_device) { 1458 case MEGARAID_INTEL_RMS3BC160_SSDID: 1459 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1460 instance->host->host_no, 1461 MEGARAID_INTEL_RMS3BC160_BRANDING); 1462 break; 1463 default: 1464 break; 1465 } 1466 break; 1467 default: 1468 break; 1469 } 1470 } 1471 1472 /** 1473 * megasas_allocate_raid_maps - Allocate memory for RAID maps 1474 * @instance: Adapter soft state 1475 * 1476 * return: if success: return 0 1477 * failed: return -ENOMEM 1478 */ 1479 static inline int megasas_allocate_raid_maps(struct megasas_instance *instance) 1480 { 1481 struct fusion_context *fusion; 1482 int i = 0; 1483 1484 fusion = instance->ctrl_context; 1485 1486 fusion->drv_map_pages = get_order(fusion->drv_map_sz); 1487 1488 for (i = 0; i < 2; i++) { 1489 fusion->ld_map[i] = NULL; 1490 1491 fusion->ld_drv_map[i] = (void *) 1492 __get_free_pages(__GFP_ZERO | GFP_KERNEL, 1493 fusion->drv_map_pages); 1494 1495 if (!fusion->ld_drv_map[i]) { 1496 fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz); 1497 1498 if (!fusion->ld_drv_map[i]) { 1499 dev_err(&instance->pdev->dev, 1500 "Could not allocate memory for local map" 1501 " size requested: %d\n", 1502 fusion->drv_map_sz); 1503 goto ld_drv_map_alloc_fail; 1504 } 1505 } 1506 } 1507 1508 for (i = 0; i < 2; i++) { 1509 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev, 1510 fusion->max_map_sz, 1511 &fusion->ld_map_phys[i], 1512 GFP_KERNEL); 1513 if (!fusion->ld_map[i]) { 1514 dev_err(&instance->pdev->dev, 1515 "Could not allocate memory for map info %s:%d\n", 1516 __func__, __LINE__); 1517 goto ld_map_alloc_fail; 1518 } 1519 } 1520 1521 return 0; 1522 1523 ld_map_alloc_fail: 1524 for (i = 0; i < 2; i++) { 1525 if (fusion->ld_map[i]) 1526 dma_free_coherent(&instance->pdev->dev, 1527 fusion->max_map_sz, 1528 fusion->ld_map[i], 1529 fusion->ld_map_phys[i]); 1530 } 1531 1532 ld_drv_map_alloc_fail: 1533 for (i = 0; i < 2; i++) { 1534 if (fusion->ld_drv_map[i]) { 1535 if (is_vmalloc_addr(fusion->ld_drv_map[i])) 1536 vfree(fusion->ld_drv_map[i]); 1537 else 1538 free_pages((ulong)fusion->ld_drv_map[i], 1539 fusion->drv_map_pages); 1540 } 1541 } 1542 1543 return -ENOMEM; 1544 } 1545 1546 /** 1547 * megasas_configure_queue_sizes - Calculate size of request desc queue, 1548 * reply desc queue, 1549 * IO request frame queue, set can_queue. 1550 * @instance: Adapter soft state 1551 * @return: void 1552 */ 1553 static inline 1554 void megasas_configure_queue_sizes(struct megasas_instance *instance) 1555 { 1556 struct fusion_context *fusion; 1557 u16 max_cmd; 1558 1559 fusion = instance->ctrl_context; 1560 max_cmd = instance->max_fw_cmds; 1561 1562 if (instance->adapter_type == VENTURA_SERIES) 1563 instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS; 1564 else 1565 instance->max_mpt_cmds = instance->max_fw_cmds; 1566 1567 instance->max_scsi_cmds = instance->max_fw_cmds - 1568 (MEGASAS_FUSION_INTERNAL_CMDS + 1569 MEGASAS_FUSION_IOCTL_CMDS); 1570 instance->cur_can_queue = instance->max_scsi_cmds; 1571 instance->host->can_queue = instance->cur_can_queue; 1572 1573 fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16; 1574 1575 fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * 1576 instance->max_mpt_cmds; 1577 fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) * 1578 (fusion->reply_q_depth); 1579 fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE + 1580 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 1581 * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */ 1582 } 1583 1584 static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance) 1585 { 1586 struct fusion_context *fusion; 1587 struct megasas_cmd *cmd; 1588 1589 fusion = instance->ctrl_context; 1590 1591 cmd = kzalloc(sizeof(struct megasas_cmd), GFP_KERNEL); 1592 1593 if (!cmd) { 1594 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n", 1595 __func__, __LINE__); 1596 return -ENOMEM; 1597 } 1598 1599 cmd->frame = dma_alloc_coherent(&instance->pdev->dev, 1600 IOC_INIT_FRAME_SIZE, 1601 &cmd->frame_phys_addr, GFP_KERNEL); 1602 1603 if (!cmd->frame) { 1604 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n", 1605 __func__, __LINE__); 1606 kfree(cmd); 1607 return -ENOMEM; 1608 } 1609 1610 fusion->ioc_init_cmd = cmd; 1611 return 0; 1612 } 1613 1614 /** 1615 * megasas_free_ioc_init_cmd - Free IOC INIT command frame 1616 * @instance: Adapter soft state 1617 */ 1618 static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance) 1619 { 1620 struct fusion_context *fusion; 1621 1622 fusion = instance->ctrl_context; 1623 1624 if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame) 1625 dma_free_coherent(&instance->pdev->dev, 1626 IOC_INIT_FRAME_SIZE, 1627 fusion->ioc_init_cmd->frame, 1628 fusion->ioc_init_cmd->frame_phys_addr); 1629 1630 if (fusion->ioc_init_cmd) 1631 kfree(fusion->ioc_init_cmd); 1632 } 1633 1634 /** 1635 * megasas_init_adapter_fusion - Initializes the FW 1636 * @instance: Adapter soft state 1637 * 1638 * This is the main function for initializing firmware. 1639 */ 1640 u32 1641 megasas_init_adapter_fusion(struct megasas_instance *instance) 1642 { 1643 struct megasas_register_set __iomem *reg_set; 1644 struct fusion_context *fusion; 1645 u32 scratch_pad_2; 1646 int i = 0, count; 1647 1648 fusion = instance->ctrl_context; 1649 1650 reg_set = instance->reg_set; 1651 1652 megasas_fusion_update_can_queue(instance, PROBE_CONTEXT); 1653 1654 /* 1655 * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames 1656 */ 1657 instance->max_mfi_cmds = 1658 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS; 1659 1660 megasas_configure_queue_sizes(instance); 1661 1662 scratch_pad_2 = readl(&instance->reg_set->outbound_scratch_pad_2); 1663 /* If scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set, 1664 * Firmware support extended IO chain frame which is 4 times more than 1665 * legacy Firmware. 1666 * Legacy Firmware - Frame size is (8 * 128) = 1K 1667 * 1M IO Firmware - Frame size is (8 * 128 * 4) = 4K 1668 */ 1669 if (scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK) 1670 instance->max_chain_frame_sz = 1671 ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >> 1672 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO; 1673 else 1674 instance->max_chain_frame_sz = 1675 ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >> 1676 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO; 1677 1678 if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) { 1679 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n", 1680 instance->max_chain_frame_sz, 1681 MEGASAS_CHAIN_FRAME_SZ_MIN); 1682 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN; 1683 } 1684 1685 fusion->max_sge_in_main_msg = 1686 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 1687 - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16; 1688 1689 fusion->max_sge_in_chain = 1690 instance->max_chain_frame_sz 1691 / sizeof(union MPI2_SGE_IO_UNION); 1692 1693 instance->max_num_sge = 1694 rounddown_pow_of_two(fusion->max_sge_in_main_msg 1695 + fusion->max_sge_in_chain - 2); 1696 1697 /* Used for pass thru MFI frame (DCMD) */ 1698 fusion->chain_offset_mfi_pthru = 1699 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16; 1700 1701 fusion->chain_offset_io_request = 1702 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE - 1703 sizeof(union MPI2_SGE_IO_UNION))/16; 1704 1705 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 1706 for (i = 0 ; i < count; i++) 1707 fusion->last_reply_idx[i] = 0; 1708 1709 /* 1710 * For fusion adapters, 3 commands for IOCTL and 8 commands 1711 * for driver's internal DCMDs. 1712 */ 1713 instance->max_scsi_cmds = instance->max_fw_cmds - 1714 (MEGASAS_FUSION_INTERNAL_CMDS + 1715 MEGASAS_FUSION_IOCTL_CMDS); 1716 sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS); 1717 1718 if (megasas_alloc_ioc_init_frame(instance)) 1719 return 1; 1720 1721 /* 1722 * Allocate memory for descriptors 1723 * Create a pool of commands 1724 */ 1725 if (megasas_alloc_cmds(instance)) 1726 goto fail_alloc_mfi_cmds; 1727 if (megasas_alloc_cmds_fusion(instance)) 1728 goto fail_alloc_cmds; 1729 1730 if (megasas_ioc_init_fusion(instance)) 1731 goto fail_ioc_init; 1732 1733 megasas_display_intel_branding(instance); 1734 if (megasas_get_ctrl_info(instance)) { 1735 dev_err(&instance->pdev->dev, 1736 "Could not get controller info. Fail from %s %d\n", 1737 __func__, __LINE__); 1738 goto fail_ioc_init; 1739 } 1740 1741 instance->flag_ieee = 1; 1742 instance->r1_ldio_hint_default = MR_R1_LDIO_PIGGYBACK_DEFAULT; 1743 fusion->fast_path_io = 0; 1744 1745 if (megasas_allocate_raid_maps(instance)) 1746 goto fail_ioc_init; 1747 1748 if (!megasas_get_map_info(instance)) 1749 megasas_sync_map_info(instance); 1750 1751 return 0; 1752 1753 fail_ioc_init: 1754 megasas_free_cmds_fusion(instance); 1755 fail_alloc_cmds: 1756 megasas_free_cmds(instance); 1757 fail_alloc_mfi_cmds: 1758 megasas_free_ioc_init_cmd(instance); 1759 return 1; 1760 } 1761 1762 /** 1763 * map_cmd_status - Maps FW cmd status to OS cmd status 1764 * @cmd : Pointer to cmd 1765 * @status : status of cmd returned by FW 1766 * @ext_status : ext status of cmd returned by FW 1767 */ 1768 1769 void 1770 map_cmd_status(struct fusion_context *fusion, 1771 struct scsi_cmnd *scmd, u8 status, u8 ext_status, 1772 u32 data_length, u8 *sense) 1773 { 1774 u8 cmd_type; 1775 int resid; 1776 1777 cmd_type = megasas_cmd_type(scmd); 1778 switch (status) { 1779 1780 case MFI_STAT_OK: 1781 scmd->result = DID_OK << 16; 1782 break; 1783 1784 case MFI_STAT_SCSI_IO_FAILED: 1785 case MFI_STAT_LD_INIT_IN_PROGRESS: 1786 scmd->result = (DID_ERROR << 16) | ext_status; 1787 break; 1788 1789 case MFI_STAT_SCSI_DONE_WITH_ERROR: 1790 1791 scmd->result = (DID_OK << 16) | ext_status; 1792 if (ext_status == SAM_STAT_CHECK_CONDITION) { 1793 memset(scmd->sense_buffer, 0, 1794 SCSI_SENSE_BUFFERSIZE); 1795 memcpy(scmd->sense_buffer, sense, 1796 SCSI_SENSE_BUFFERSIZE); 1797 scmd->result |= DRIVER_SENSE << 24; 1798 } 1799 1800 /* 1801 * If the IO request is partially completed, then MR FW will 1802 * update "io_request->DataLength" field with actual number of 1803 * bytes transferred.Driver will set residual bytes count in 1804 * SCSI command structure. 1805 */ 1806 resid = (scsi_bufflen(scmd) - data_length); 1807 scsi_set_resid(scmd, resid); 1808 1809 if (resid && 1810 ((cmd_type == READ_WRITE_LDIO) || 1811 (cmd_type == READ_WRITE_SYSPDIO))) 1812 scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len" 1813 " requested/completed 0x%x/0x%x\n", 1814 status, scsi_bufflen(scmd), data_length); 1815 break; 1816 1817 case MFI_STAT_LD_OFFLINE: 1818 case MFI_STAT_DEVICE_NOT_FOUND: 1819 scmd->result = DID_BAD_TARGET << 16; 1820 break; 1821 case MFI_STAT_CONFIG_SEQ_MISMATCH: 1822 scmd->result = DID_IMM_RETRY << 16; 1823 break; 1824 default: 1825 scmd->result = DID_ERROR << 16; 1826 break; 1827 } 1828 } 1829 1830 /** 1831 * megasas_is_prp_possible - 1832 * Checks if native NVMe PRPs can be built for the IO 1833 * 1834 * @instance: Adapter soft state 1835 * @scmd: SCSI command from the mid-layer 1836 * @sge_count: scatter gather element count. 1837 * 1838 * Returns: true: PRPs can be built 1839 * false: IEEE SGLs needs to be built 1840 */ 1841 static bool 1842 megasas_is_prp_possible(struct megasas_instance *instance, 1843 struct scsi_cmnd *scmd, int sge_count) 1844 { 1845 struct fusion_context *fusion; 1846 int i; 1847 u32 data_length = 0; 1848 struct scatterlist *sg_scmd; 1849 bool build_prp = false; 1850 u32 mr_nvme_pg_size; 1851 1852 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, 1853 MR_DEFAULT_NVME_PAGE_SIZE); 1854 fusion = instance->ctrl_context; 1855 data_length = scsi_bufflen(scmd); 1856 sg_scmd = scsi_sglist(scmd); 1857 1858 /* 1859 * NVMe uses one PRP for each page (or part of a page) 1860 * look at the data length - if 4 pages or less then IEEE is OK 1861 * if > 5 pages then we need to build a native SGL 1862 * if > 4 and <= 5 pages, then check physical address of 1st SG entry 1863 * if this first size in the page is >= the residual beyond 4 pages 1864 * then use IEEE, otherwise use native SGL 1865 */ 1866 1867 if (data_length > (mr_nvme_pg_size * 5)) { 1868 build_prp = true; 1869 } else if ((data_length > (mr_nvme_pg_size * 4)) && 1870 (data_length <= (mr_nvme_pg_size * 5))) { 1871 /* check if 1st SG entry size is < residual beyond 4 pages */ 1872 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4))) 1873 build_prp = true; 1874 } 1875 1876 /* 1877 * Below code detects gaps/holes in IO data buffers. 1878 * What does holes/gaps mean? 1879 * Any SGE except first one in a SGL starts at non NVME page size 1880 * aligned address OR Any SGE except last one in a SGL ends at 1881 * non NVME page size boundary. 1882 * 1883 * Driver has already informed block layer by setting boundary rules for 1884 * bio merging done at NVME page size boundary calling kernel API 1885 * blk_queue_virt_boundary inside slave_config. 1886 * Still there is possibility of IO coming with holes to driver because of 1887 * IO merging done by IO scheduler. 1888 * 1889 * With SCSI BLK MQ enabled, there will be no IO with holes as there is no 1890 * IO scheduling so no IO merging. 1891 * 1892 * With SCSI BLK MQ disabled, IO scheduler may attempt to merge IOs and 1893 * then sending IOs with holes. 1894 * 1895 * Though driver can request block layer to disable IO merging by calling- 1896 * blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue) but 1897 * user may tune sysfs parameter- nomerges again to 0 or 1. 1898 * 1899 * If in future IO scheduling is enabled with SCSI BLK MQ, 1900 * this algorithm to detect holes will be required in driver 1901 * for SCSI BLK MQ enabled case as well. 1902 * 1903 * 1904 */ 1905 scsi_for_each_sg(scmd, sg_scmd, sge_count, i) { 1906 if ((i != 0) && (i != (sge_count - 1))) { 1907 if (mega_mod64(sg_dma_len(sg_scmd), mr_nvme_pg_size) || 1908 mega_mod64(sg_dma_address(sg_scmd), 1909 mr_nvme_pg_size)) { 1910 build_prp = false; 1911 atomic_inc(&instance->sge_holes_type1); 1912 break; 1913 } 1914 } 1915 1916 if ((sge_count > 1) && (i == 0)) { 1917 if ((mega_mod64((sg_dma_address(sg_scmd) + 1918 sg_dma_len(sg_scmd)), 1919 mr_nvme_pg_size))) { 1920 build_prp = false; 1921 atomic_inc(&instance->sge_holes_type2); 1922 break; 1923 } 1924 } 1925 1926 if ((sge_count > 1) && (i == (sge_count - 1))) { 1927 if (mega_mod64(sg_dma_address(sg_scmd), 1928 mr_nvme_pg_size)) { 1929 build_prp = false; 1930 atomic_inc(&instance->sge_holes_type3); 1931 break; 1932 } 1933 } 1934 } 1935 1936 return build_prp; 1937 } 1938 1939 /** 1940 * megasas_make_prp_nvme - 1941 * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only 1942 * 1943 * @instance: Adapter soft state 1944 * @scmd: SCSI command from the mid-layer 1945 * @sgl_ptr: SGL to be filled in 1946 * @cmd: Fusion command frame 1947 * @sge_count: scatter gather element count. 1948 * 1949 * Returns: true: PRPs are built 1950 * false: IEEE SGLs needs to be built 1951 */ 1952 static bool 1953 megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd, 1954 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, 1955 struct megasas_cmd_fusion *cmd, int sge_count) 1956 { 1957 int sge_len, offset, num_prp_in_chain = 0; 1958 struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl; 1959 u64 *ptr_sgl; 1960 dma_addr_t ptr_sgl_phys; 1961 u64 sge_addr; 1962 u32 page_mask, page_mask_result; 1963 struct scatterlist *sg_scmd; 1964 u32 first_prp_len; 1965 bool build_prp = false; 1966 int data_len = scsi_bufflen(scmd); 1967 struct fusion_context *fusion; 1968 u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, 1969 MR_DEFAULT_NVME_PAGE_SIZE); 1970 1971 fusion = instance->ctrl_context; 1972 1973 build_prp = megasas_is_prp_possible(instance, scmd, sge_count); 1974 1975 if (!build_prp) 1976 return false; 1977 1978 /* 1979 * Nvme has a very convoluted prp format. One prp is required 1980 * for each page or partial page. Driver need to split up OS sg_list 1981 * entries if it is longer than one page or cross a page 1982 * boundary. Driver also have to insert a PRP list pointer entry as 1983 * the last entry in each physical page of the PRP list. 1984 * 1985 * NOTE: The first PRP "entry" is actually placed in the first 1986 * SGL entry in the main message as IEEE 64 format. The 2nd 1987 * entry in the main message is the chain element, and the rest 1988 * of the PRP entries are built in the contiguous pcie buffer. 1989 */ 1990 page_mask = mr_nvme_pg_size - 1; 1991 ptr_sgl = (u64 *)cmd->sg_frame; 1992 ptr_sgl_phys = cmd->sg_frame_phys_addr; 1993 memset(ptr_sgl, 0, instance->max_chain_frame_sz); 1994 1995 /* Build chain frame element which holds all prps except first*/ 1996 main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *) 1997 ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64)); 1998 1999 main_chain_element->Address = cpu_to_le64(ptr_sgl_phys); 2000 main_chain_element->NextChainOffset = 0; 2001 main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | 2002 IEEE_SGE_FLAGS_SYSTEM_ADDR | 2003 MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP; 2004 2005 /* Build first prp, sge need not to be page aligned*/ 2006 ptr_first_sgl = sgl_ptr; 2007 sg_scmd = scsi_sglist(scmd); 2008 sge_addr = sg_dma_address(sg_scmd); 2009 sge_len = sg_dma_len(sg_scmd); 2010 2011 offset = (u32)(sge_addr & page_mask); 2012 first_prp_len = mr_nvme_pg_size - offset; 2013 2014 ptr_first_sgl->Address = cpu_to_le64(sge_addr); 2015 ptr_first_sgl->Length = cpu_to_le32(first_prp_len); 2016 2017 data_len -= first_prp_len; 2018 2019 if (sge_len > first_prp_len) { 2020 sge_addr += first_prp_len; 2021 sge_len -= first_prp_len; 2022 } else if (sge_len == first_prp_len) { 2023 sg_scmd = sg_next(sg_scmd); 2024 sge_addr = sg_dma_address(sg_scmd); 2025 sge_len = sg_dma_len(sg_scmd); 2026 } 2027 2028 for (;;) { 2029 offset = (u32)(sge_addr & page_mask); 2030 2031 /* Put PRP pointer due to page boundary*/ 2032 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask; 2033 if (unlikely(!page_mask_result)) { 2034 scmd_printk(KERN_NOTICE, 2035 scmd, "page boundary ptr_sgl: 0x%p\n", 2036 ptr_sgl); 2037 ptr_sgl_phys += 8; 2038 *ptr_sgl = cpu_to_le64(ptr_sgl_phys); 2039 ptr_sgl++; 2040 num_prp_in_chain++; 2041 } 2042 2043 *ptr_sgl = cpu_to_le64(sge_addr); 2044 ptr_sgl++; 2045 ptr_sgl_phys += 8; 2046 num_prp_in_chain++; 2047 2048 sge_addr += mr_nvme_pg_size; 2049 sge_len -= mr_nvme_pg_size; 2050 data_len -= mr_nvme_pg_size; 2051 2052 if (data_len <= 0) 2053 break; 2054 2055 if (sge_len > 0) 2056 continue; 2057 2058 sg_scmd = sg_next(sg_scmd); 2059 sge_addr = sg_dma_address(sg_scmd); 2060 sge_len = sg_dma_len(sg_scmd); 2061 } 2062 2063 main_chain_element->Length = 2064 cpu_to_le32(num_prp_in_chain * sizeof(u64)); 2065 2066 atomic_inc(&instance->prp_sgl); 2067 return build_prp; 2068 } 2069 2070 /** 2071 * megasas_make_sgl_fusion - Prepares 32-bit SGL 2072 * @instance: Adapter soft state 2073 * @scp: SCSI command from the mid-layer 2074 * @sgl_ptr: SGL to be filled in 2075 * @cmd: cmd we are working on 2076 * @sge_count sge count 2077 * 2078 */ 2079 static void 2080 megasas_make_sgl_fusion(struct megasas_instance *instance, 2081 struct scsi_cmnd *scp, 2082 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, 2083 struct megasas_cmd_fusion *cmd, int sge_count) 2084 { 2085 int i, sg_processed; 2086 struct scatterlist *os_sgl; 2087 struct fusion_context *fusion; 2088 2089 fusion = instance->ctrl_context; 2090 2091 if (instance->adapter_type >= INVADER_SERIES) { 2092 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr; 2093 sgl_ptr_end += fusion->max_sge_in_main_msg - 1; 2094 sgl_ptr_end->Flags = 0; 2095 } 2096 2097 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 2098 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl)); 2099 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl)); 2100 sgl_ptr->Flags = 0; 2101 if (instance->adapter_type >= INVADER_SERIES) 2102 if (i == sge_count - 1) 2103 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST; 2104 sgl_ptr++; 2105 sg_processed = i + 1; 2106 2107 if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) && 2108 (sge_count > fusion->max_sge_in_main_msg)) { 2109 2110 struct MPI25_IEEE_SGE_CHAIN64 *sg_chain; 2111 if (instance->adapter_type >= INVADER_SERIES) { 2112 if ((le16_to_cpu(cmd->io_request->IoFlags) & 2113 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) != 2114 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) 2115 cmd->io_request->ChainOffset = 2116 fusion-> 2117 chain_offset_io_request; 2118 else 2119 cmd->io_request->ChainOffset = 0; 2120 } else 2121 cmd->io_request->ChainOffset = 2122 fusion->chain_offset_io_request; 2123 2124 sg_chain = sgl_ptr; 2125 /* Prepare chain element */ 2126 sg_chain->NextChainOffset = 0; 2127 if (instance->adapter_type >= INVADER_SERIES) 2128 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT; 2129 else 2130 sg_chain->Flags = 2131 (IEEE_SGE_FLAGS_CHAIN_ELEMENT | 2132 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR); 2133 sg_chain->Length = cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed))); 2134 sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr); 2135 2136 sgl_ptr = 2137 (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame; 2138 memset(sgl_ptr, 0, instance->max_chain_frame_sz); 2139 } 2140 } 2141 atomic_inc(&instance->ieee_sgl); 2142 } 2143 2144 /** 2145 * megasas_make_sgl - Build Scatter Gather List(SGLs) 2146 * @scp: SCSI command pointer 2147 * @instance: Soft instance of controller 2148 * @cmd: Fusion command pointer 2149 * 2150 * This function will build sgls based on device type. 2151 * For nvme drives, there is different way of building sgls in nvme native 2152 * format- PRPs(Physical Region Page). 2153 * 2154 * Returns the number of sg lists actually used, zero if the sg lists 2155 * is NULL, or -ENOMEM if the mapping failed 2156 */ 2157 static 2158 int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp, 2159 struct megasas_cmd_fusion *cmd) 2160 { 2161 int sge_count; 2162 bool build_prp = false; 2163 struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64; 2164 2165 sge_count = scsi_dma_map(scp); 2166 2167 if ((sge_count > instance->max_num_sge) || (sge_count <= 0)) 2168 return sge_count; 2169 2170 sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL; 2171 if ((le16_to_cpu(cmd->io_request->IoFlags) & 2172 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) && 2173 (cmd->pd_interface == NVME_PD)) 2174 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64, 2175 cmd, sge_count); 2176 2177 if (!build_prp) 2178 megasas_make_sgl_fusion(instance, scp, sgl_chain64, 2179 cmd, sge_count); 2180 2181 return sge_count; 2182 } 2183 2184 /** 2185 * megasas_set_pd_lba - Sets PD LBA 2186 * @cdb: CDB 2187 * @cdb_len: cdb length 2188 * @start_blk: Start block of IO 2189 * 2190 * Used to set the PD LBA in CDB for FP IOs 2191 */ 2192 void 2193 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len, 2194 struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp, 2195 struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag) 2196 { 2197 struct MR_LD_RAID *raid; 2198 u16 ld; 2199 u64 start_blk = io_info->pdBlock; 2200 u8 *cdb = io_request->CDB.CDB32; 2201 u32 num_blocks = io_info->numBlocks; 2202 u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0; 2203 2204 /* Check if T10 PI (DIF) is enabled for this LD */ 2205 ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr); 2206 raid = MR_LdRaidGet(ld, local_map_ptr); 2207 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) { 2208 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2209 cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD; 2210 cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN; 2211 2212 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 2213 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32; 2214 else 2215 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32; 2216 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL; 2217 2218 /* LBA */ 2219 cdb[12] = (u8)((start_blk >> 56) & 0xff); 2220 cdb[13] = (u8)((start_blk >> 48) & 0xff); 2221 cdb[14] = (u8)((start_blk >> 40) & 0xff); 2222 cdb[15] = (u8)((start_blk >> 32) & 0xff); 2223 cdb[16] = (u8)((start_blk >> 24) & 0xff); 2224 cdb[17] = (u8)((start_blk >> 16) & 0xff); 2225 cdb[18] = (u8)((start_blk >> 8) & 0xff); 2226 cdb[19] = (u8)(start_blk & 0xff); 2227 2228 /* Logical block reference tag */ 2229 io_request->CDB.EEDP32.PrimaryReferenceTag = 2230 cpu_to_be32(ref_tag); 2231 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff); 2232 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */ 2233 2234 /* Transfer length */ 2235 cdb[28] = (u8)((num_blocks >> 24) & 0xff); 2236 cdb[29] = (u8)((num_blocks >> 16) & 0xff); 2237 cdb[30] = (u8)((num_blocks >> 8) & 0xff); 2238 cdb[31] = (u8)(num_blocks & 0xff); 2239 2240 /* set SCSI IO EEDPFlags */ 2241 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) { 2242 io_request->EEDPFlags = cpu_to_le16( 2243 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | 2244 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG | 2245 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP | 2246 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG | 2247 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE | 2248 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD); 2249 } else { 2250 io_request->EEDPFlags = cpu_to_le16( 2251 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | 2252 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP); 2253 } 2254 io_request->Control |= cpu_to_le32((0x4 << 26)); 2255 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size); 2256 } else { 2257 /* Some drives don't support 16/12 byte CDB's, convert to 10 */ 2258 if (((cdb_len == 12) || (cdb_len == 16)) && 2259 (start_blk <= 0xffffffff)) { 2260 if (cdb_len == 16) { 2261 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10; 2262 flagvals = cdb[1]; 2263 groupnum = cdb[14]; 2264 control = cdb[15]; 2265 } else { 2266 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10; 2267 flagvals = cdb[1]; 2268 groupnum = cdb[10]; 2269 control = cdb[11]; 2270 } 2271 2272 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2273 2274 cdb[0] = opcode; 2275 cdb[1] = flagvals; 2276 cdb[6] = groupnum; 2277 cdb[9] = control; 2278 2279 /* Transfer length */ 2280 cdb[8] = (u8)(num_blocks & 0xff); 2281 cdb[7] = (u8)((num_blocks >> 8) & 0xff); 2282 2283 io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */ 2284 cdb_len = 10; 2285 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) { 2286 /* Convert to 16 byte CDB for large LBA's */ 2287 switch (cdb_len) { 2288 case 6: 2289 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16; 2290 control = cdb[5]; 2291 break; 2292 case 10: 2293 opcode = 2294 cdb[0] == READ_10 ? READ_16 : WRITE_16; 2295 flagvals = cdb[1]; 2296 groupnum = cdb[6]; 2297 control = cdb[9]; 2298 break; 2299 case 12: 2300 opcode = 2301 cdb[0] == READ_12 ? READ_16 : WRITE_16; 2302 flagvals = cdb[1]; 2303 groupnum = cdb[10]; 2304 control = cdb[11]; 2305 break; 2306 } 2307 2308 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2309 2310 cdb[0] = opcode; 2311 cdb[1] = flagvals; 2312 cdb[14] = groupnum; 2313 cdb[15] = control; 2314 2315 /* Transfer length */ 2316 cdb[13] = (u8)(num_blocks & 0xff); 2317 cdb[12] = (u8)((num_blocks >> 8) & 0xff); 2318 cdb[11] = (u8)((num_blocks >> 16) & 0xff); 2319 cdb[10] = (u8)((num_blocks >> 24) & 0xff); 2320 2321 io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */ 2322 cdb_len = 16; 2323 } 2324 2325 /* Normal case, just load LBA here */ 2326 switch (cdb_len) { 2327 case 6: 2328 { 2329 u8 val = cdb[1] & 0xE0; 2330 cdb[3] = (u8)(start_blk & 0xff); 2331 cdb[2] = (u8)((start_blk >> 8) & 0xff); 2332 cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f); 2333 break; 2334 } 2335 case 10: 2336 cdb[5] = (u8)(start_blk & 0xff); 2337 cdb[4] = (u8)((start_blk >> 8) & 0xff); 2338 cdb[3] = (u8)((start_blk >> 16) & 0xff); 2339 cdb[2] = (u8)((start_blk >> 24) & 0xff); 2340 break; 2341 case 12: 2342 cdb[5] = (u8)(start_blk & 0xff); 2343 cdb[4] = (u8)((start_blk >> 8) & 0xff); 2344 cdb[3] = (u8)((start_blk >> 16) & 0xff); 2345 cdb[2] = (u8)((start_blk >> 24) & 0xff); 2346 break; 2347 case 16: 2348 cdb[9] = (u8)(start_blk & 0xff); 2349 cdb[8] = (u8)((start_blk >> 8) & 0xff); 2350 cdb[7] = (u8)((start_blk >> 16) & 0xff); 2351 cdb[6] = (u8)((start_blk >> 24) & 0xff); 2352 cdb[5] = (u8)((start_blk >> 32) & 0xff); 2353 cdb[4] = (u8)((start_blk >> 40) & 0xff); 2354 cdb[3] = (u8)((start_blk >> 48) & 0xff); 2355 cdb[2] = (u8)((start_blk >> 56) & 0xff); 2356 break; 2357 } 2358 } 2359 } 2360 2361 /** 2362 * megasas_stream_detect - stream detection on read and and write IOs 2363 * @instance: Adapter soft state 2364 * @cmd: Command to be prepared 2365 * @io_info: IO Request info 2366 * 2367 */ 2368 2369 /** stream detection on read and and write IOs */ 2370 static void megasas_stream_detect(struct megasas_instance *instance, 2371 struct megasas_cmd_fusion *cmd, 2372 struct IO_REQUEST_INFO *io_info) 2373 { 2374 struct fusion_context *fusion = instance->ctrl_context; 2375 u32 device_id = io_info->ldTgtId; 2376 struct LD_STREAM_DETECT *current_ld_sd 2377 = fusion->stream_detect_by_ld[device_id]; 2378 u32 *track_stream = ¤t_ld_sd->mru_bit_map, stream_num; 2379 u32 shifted_values, unshifted_values; 2380 u32 index_value_mask, shifted_values_mask; 2381 int i; 2382 bool is_read_ahead = false; 2383 struct STREAM_DETECT *current_sd; 2384 /* find possible stream */ 2385 for (i = 0; i < MAX_STREAMS_TRACKED; ++i) { 2386 stream_num = (*track_stream >> 2387 (i * BITS_PER_INDEX_STREAM)) & 2388 STREAM_MASK; 2389 current_sd = ¤t_ld_sd->stream_track[stream_num]; 2390 /* if we found a stream, update the raid 2391 * context and also update the mruBitMap 2392 */ 2393 /* boundary condition */ 2394 if ((current_sd->next_seq_lba) && 2395 (io_info->ldStartBlock >= current_sd->next_seq_lba) && 2396 (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) && 2397 (current_sd->is_read == io_info->isRead)) { 2398 2399 if ((io_info->ldStartBlock != current_sd->next_seq_lba) && 2400 ((!io_info->isRead) || (!is_read_ahead))) 2401 /* 2402 * Once the API availible we need to change this. 2403 * At this point we are not allowing any gap 2404 */ 2405 continue; 2406 2407 SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35); 2408 current_sd->next_seq_lba = 2409 io_info->ldStartBlock + io_info->numBlocks; 2410 /* 2411 * update the mruBitMap LRU 2412 */ 2413 shifted_values_mask = 2414 (1 << i * BITS_PER_INDEX_STREAM) - 1; 2415 shifted_values = ((*track_stream & shifted_values_mask) 2416 << BITS_PER_INDEX_STREAM); 2417 index_value_mask = 2418 STREAM_MASK << i * BITS_PER_INDEX_STREAM; 2419 unshifted_values = 2420 *track_stream & ~(shifted_values_mask | 2421 index_value_mask); 2422 *track_stream = 2423 unshifted_values | shifted_values | stream_num; 2424 return; 2425 } 2426 } 2427 /* 2428 * if we did not find any stream, create a new one 2429 * from the least recently used 2430 */ 2431 stream_num = (*track_stream >> 2432 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) & 2433 STREAM_MASK; 2434 current_sd = ¤t_ld_sd->stream_track[stream_num]; 2435 current_sd->is_read = io_info->isRead; 2436 current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks; 2437 *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num); 2438 return; 2439 } 2440 2441 /** 2442 * megasas_set_raidflag_cpu_affinity - This function sets the cpu 2443 * affinity (cpu of the controller) and raid_flags in the raid context 2444 * based on IO type. 2445 * 2446 * @praid_context: IO RAID context 2447 * @raid: LD raid map 2448 * @fp_possible: Is fast path possible? 2449 * @is_read: Is read IO? 2450 * 2451 */ 2452 static void 2453 megasas_set_raidflag_cpu_affinity(union RAID_CONTEXT_UNION *praid_context, 2454 struct MR_LD_RAID *raid, bool fp_possible, 2455 u8 is_read, u32 scsi_buff_len) 2456 { 2457 u8 cpu_sel = MR_RAID_CTX_CPUSEL_0; 2458 struct RAID_CONTEXT_G35 *rctx_g35; 2459 2460 rctx_g35 = &praid_context->raid_context_g35; 2461 if (fp_possible) { 2462 if (is_read) { 2463 if ((raid->cpuAffinity.pdRead.cpu0) && 2464 (raid->cpuAffinity.pdRead.cpu1)) 2465 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2466 else if (raid->cpuAffinity.pdRead.cpu1) 2467 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2468 } else { 2469 if ((raid->cpuAffinity.pdWrite.cpu0) && 2470 (raid->cpuAffinity.pdWrite.cpu1)) 2471 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2472 else if (raid->cpuAffinity.pdWrite.cpu1) 2473 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2474 /* Fast path cache by pass capable R0/R1 VD */ 2475 if ((raid->level <= 1) && 2476 (raid->capability.fp_cache_bypass_capable)) { 2477 rctx_g35->routing_flags |= 2478 (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT); 2479 rctx_g35->raid_flags = 2480 (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS 2481 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); 2482 } 2483 } 2484 } else { 2485 if (is_read) { 2486 if ((raid->cpuAffinity.ldRead.cpu0) && 2487 (raid->cpuAffinity.ldRead.cpu1)) 2488 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2489 else if (raid->cpuAffinity.ldRead.cpu1) 2490 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2491 } else { 2492 if ((raid->cpuAffinity.ldWrite.cpu0) && 2493 (raid->cpuAffinity.ldWrite.cpu1)) 2494 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2495 else if (raid->cpuAffinity.ldWrite.cpu1) 2496 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2497 2498 if (is_stream_detected(rctx_g35) && 2499 ((raid->level == 5) || (raid->level == 6)) && 2500 (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) && 2501 (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS)) 2502 cpu_sel = MR_RAID_CTX_CPUSEL_0; 2503 } 2504 } 2505 2506 rctx_g35->routing_flags |= 2507 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT); 2508 2509 /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT 2510 * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS. 2511 * IO Subtype is not bitmap. 2512 */ 2513 if ((raid->level == 1) && (!is_read)) { 2514 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE) 2515 praid_context->raid_context_g35.raid_flags = 2516 (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT 2517 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); 2518 } 2519 } 2520 2521 /** 2522 * megasas_build_ldio_fusion - Prepares IOs to devices 2523 * @instance: Adapter soft state 2524 * @scp: SCSI command 2525 * @cmd: Command to be prepared 2526 * 2527 * Prepares the io_request and chain elements (sg_frame) for IO 2528 * The IO can be for PD (Fast Path) or LD 2529 */ 2530 void 2531 megasas_build_ldio_fusion(struct megasas_instance *instance, 2532 struct scsi_cmnd *scp, 2533 struct megasas_cmd_fusion *cmd) 2534 { 2535 bool fp_possible; 2536 u16 ld; 2537 u32 start_lba_lo, start_lba_hi, device_id, datalength = 0; 2538 u32 scsi_buff_len; 2539 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2540 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 2541 struct IO_REQUEST_INFO io_info; 2542 struct fusion_context *fusion; 2543 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2544 u8 *raidLUN; 2545 unsigned long spinlock_flags; 2546 union RAID_CONTEXT_UNION *praid_context; 2547 struct MR_LD_RAID *raid = NULL; 2548 struct MR_PRIV_DEVICE *mrdev_priv; 2549 2550 device_id = MEGASAS_DEV_INDEX(scp); 2551 2552 fusion = instance->ctrl_context; 2553 2554 io_request = cmd->io_request; 2555 io_request->RaidContext.raid_context.virtual_disk_tgt_id = 2556 cpu_to_le16(device_id); 2557 io_request->RaidContext.raid_context.status = 0; 2558 io_request->RaidContext.raid_context.ex_status = 0; 2559 2560 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc; 2561 2562 start_lba_lo = 0; 2563 start_lba_hi = 0; 2564 fp_possible = false; 2565 2566 /* 2567 * 6-byte READ(0x08) or WRITE(0x0A) cdb 2568 */ 2569 if (scp->cmd_len == 6) { 2570 datalength = (u32) scp->cmnd[4]; 2571 start_lba_lo = ((u32) scp->cmnd[1] << 16) | 2572 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; 2573 2574 start_lba_lo &= 0x1FFFFF; 2575 } 2576 2577 /* 2578 * 10-byte READ(0x28) or WRITE(0x2A) cdb 2579 */ 2580 else if (scp->cmd_len == 10) { 2581 datalength = (u32) scp->cmnd[8] | 2582 ((u32) scp->cmnd[7] << 8); 2583 start_lba_lo = ((u32) scp->cmnd[2] << 24) | 2584 ((u32) scp->cmnd[3] << 16) | 2585 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2586 } 2587 2588 /* 2589 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 2590 */ 2591 else if (scp->cmd_len == 12) { 2592 datalength = ((u32) scp->cmnd[6] << 24) | 2593 ((u32) scp->cmnd[7] << 16) | 2594 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 2595 start_lba_lo = ((u32) scp->cmnd[2] << 24) | 2596 ((u32) scp->cmnd[3] << 16) | 2597 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2598 } 2599 2600 /* 2601 * 16-byte READ(0x88) or WRITE(0x8A) cdb 2602 */ 2603 else if (scp->cmd_len == 16) { 2604 datalength = ((u32) scp->cmnd[10] << 24) | 2605 ((u32) scp->cmnd[11] << 16) | 2606 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; 2607 start_lba_lo = ((u32) scp->cmnd[6] << 24) | 2608 ((u32) scp->cmnd[7] << 16) | 2609 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 2610 2611 start_lba_hi = ((u32) scp->cmnd[2] << 24) | 2612 ((u32) scp->cmnd[3] << 16) | 2613 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2614 } 2615 2616 memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO)); 2617 io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo; 2618 io_info.numBlocks = datalength; 2619 io_info.ldTgtId = device_id; 2620 io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 2621 scsi_buff_len = scsi_bufflen(scp); 2622 io_request->DataLength = cpu_to_le32(scsi_buff_len); 2623 2624 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 2625 io_info.isRead = 1; 2626 2627 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 2628 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 2629 2630 if (ld < instance->fw_supported_vd_count) 2631 raid = MR_LdRaidGet(ld, local_map_ptr); 2632 2633 if (!raid || (!fusion->fast_path_io)) { 2634 io_request->RaidContext.raid_context.reg_lock_flags = 0; 2635 fp_possible = false; 2636 } else { 2637 if (MR_BuildRaidContext(instance, &io_info, 2638 &io_request->RaidContext.raid_context, 2639 local_map_ptr, &raidLUN)) 2640 fp_possible = (io_info.fpOkForIo > 0) ? true : false; 2641 } 2642 2643 cmd->request_desc->SCSIIO.MSIxIndex = 2644 instance->reply_map[raw_smp_processor_id()]; 2645 2646 praid_context = &io_request->RaidContext; 2647 2648 if (instance->adapter_type == VENTURA_SERIES) { 2649 /* FP for Optimal raid level 1. 2650 * All large RAID-1 writes (> 32 KiB, both WT and WB modes) 2651 * are built by the driver as LD I/Os. 2652 * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os 2653 * (there is never a reason to process these as buffered writes) 2654 * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os 2655 * with the SLD bit asserted. 2656 */ 2657 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) { 2658 mrdev_priv = scp->device->hostdata; 2659 2660 if (atomic_inc_return(&instance->fw_outstanding) > 2661 (instance->host->can_queue)) { 2662 fp_possible = false; 2663 atomic_dec(&instance->fw_outstanding); 2664 } else if ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) || 2665 (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0)) { 2666 fp_possible = false; 2667 atomic_dec(&instance->fw_outstanding); 2668 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE) 2669 atomic_set(&mrdev_priv->r1_ldio_hint, 2670 instance->r1_ldio_hint_default); 2671 } 2672 } 2673 2674 if (!fp_possible || 2675 (io_info.isRead && io_info.ra_capable)) { 2676 spin_lock_irqsave(&instance->stream_lock, 2677 spinlock_flags); 2678 megasas_stream_detect(instance, cmd, &io_info); 2679 spin_unlock_irqrestore(&instance->stream_lock, 2680 spinlock_flags); 2681 /* In ventura if stream detected for a read and it is 2682 * read ahead capable make this IO as LDIO 2683 */ 2684 if (is_stream_detected(&io_request->RaidContext.raid_context_g35)) 2685 fp_possible = false; 2686 } 2687 2688 /* If raid is NULL, set CPU affinity to default CPU0 */ 2689 if (raid) 2690 megasas_set_raidflag_cpu_affinity(praid_context, 2691 raid, fp_possible, io_info.isRead, 2692 scsi_buff_len); 2693 else 2694 praid_context->raid_context_g35.routing_flags |= 2695 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT); 2696 } 2697 2698 if (fp_possible) { 2699 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp, 2700 local_map_ptr, start_lba_lo); 2701 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 2702 cmd->request_desc->SCSIIO.RequestFlags = 2703 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO 2704 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2705 if (instance->adapter_type == INVADER_SERIES) { 2706 if (io_request->RaidContext.raid_context.reg_lock_flags == 2707 REGION_TYPE_UNUSED) 2708 cmd->request_desc->SCSIIO.RequestFlags = 2709 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << 2710 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2711 io_request->RaidContext.raid_context.type 2712 = MPI2_TYPE_CUDA; 2713 io_request->RaidContext.raid_context.nseg = 0x1; 2714 io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 2715 io_request->RaidContext.raid_context.reg_lock_flags |= 2716 (MR_RL_FLAGS_GRANT_DESTINATION_CUDA | 2717 MR_RL_FLAGS_SEQ_NUM_ENABLE); 2718 } else if (instance->adapter_type == VENTURA_SERIES) { 2719 io_request->RaidContext.raid_context_g35.nseg_type |= 2720 (1 << RAID_CONTEXT_NSEG_SHIFT); 2721 io_request->RaidContext.raid_context_g35.nseg_type |= 2722 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2723 io_request->RaidContext.raid_context_g35.routing_flags |= 2724 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2725 io_request->IoFlags |= 2726 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 2727 } 2728 if (fusion->load_balance_info && 2729 (fusion->load_balance_info[device_id].loadBalanceFlag) && 2730 (io_info.isRead)) { 2731 io_info.devHandle = 2732 get_updated_dev_handle(instance, 2733 &fusion->load_balance_info[device_id], 2734 &io_info, local_map_ptr); 2735 scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG; 2736 cmd->pd_r1_lb = io_info.pd_after_lb; 2737 if (instance->adapter_type == VENTURA_SERIES) 2738 io_request->RaidContext.raid_context_g35.span_arm 2739 = io_info.span_arm; 2740 else 2741 io_request->RaidContext.raid_context.span_arm 2742 = io_info.span_arm; 2743 2744 } else 2745 scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; 2746 2747 if (instance->adapter_type == VENTURA_SERIES) 2748 cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle; 2749 else 2750 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 2751 2752 if ((raidLUN[0] == 1) && 2753 (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) { 2754 instance->dev_handle = !(instance->dev_handle); 2755 io_info.devHandle = 2756 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle]; 2757 } 2758 2759 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle; 2760 io_request->DevHandle = io_info.devHandle; 2761 cmd->pd_interface = io_info.pd_interface; 2762 /* populate the LUN field */ 2763 memcpy(io_request->LUN, raidLUN, 8); 2764 } else { 2765 io_request->RaidContext.raid_context.timeout_value = 2766 cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec); 2767 cmd->request_desc->SCSIIO.RequestFlags = 2768 (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO 2769 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2770 if (instance->adapter_type == INVADER_SERIES) { 2771 if (io_info.do_fp_rlbypass || 2772 (io_request->RaidContext.raid_context.reg_lock_flags 2773 == REGION_TYPE_UNUSED)) 2774 cmd->request_desc->SCSIIO.RequestFlags = 2775 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << 2776 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2777 io_request->RaidContext.raid_context.type 2778 = MPI2_TYPE_CUDA; 2779 io_request->RaidContext.raid_context.reg_lock_flags |= 2780 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 | 2781 MR_RL_FLAGS_SEQ_NUM_ENABLE); 2782 io_request->RaidContext.raid_context.nseg = 0x1; 2783 } else if (instance->adapter_type == VENTURA_SERIES) { 2784 io_request->RaidContext.raid_context_g35.routing_flags |= 2785 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2786 io_request->RaidContext.raid_context_g35.nseg_type |= 2787 (1 << RAID_CONTEXT_NSEG_SHIFT); 2788 io_request->RaidContext.raid_context_g35.nseg_type |= 2789 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2790 } 2791 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 2792 io_request->DevHandle = cpu_to_le16(device_id); 2793 2794 } /* Not FP */ 2795 } 2796 2797 /** 2798 * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk 2799 * @instance: Adapter soft state 2800 * @scp: SCSI command 2801 * @cmd: Command to be prepared 2802 * 2803 * Prepares the io_request frame for non-rw io cmds for vd. 2804 */ 2805 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance, 2806 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd) 2807 { 2808 u32 device_id; 2809 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2810 u16 ld; 2811 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2812 struct fusion_context *fusion = instance->ctrl_context; 2813 u8 span, physArm; 2814 __le16 devHandle; 2815 u32 arRef, pd; 2816 struct MR_LD_RAID *raid; 2817 struct RAID_CONTEXT *pRAID_Context; 2818 u8 fp_possible = 1; 2819 2820 io_request = cmd->io_request; 2821 device_id = MEGASAS_DEV_INDEX(scmd); 2822 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 2823 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); 2824 /* get RAID_Context pointer */ 2825 pRAID_Context = &io_request->RaidContext.raid_context; 2826 /* Check with FW team */ 2827 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 2828 pRAID_Context->reg_lock_row_lba = 0; 2829 pRAID_Context->reg_lock_length = 0; 2830 2831 if (fusion->fast_path_io && ( 2832 device_id < instance->fw_supported_vd_count)) { 2833 2834 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 2835 if (ld >= instance->fw_supported_vd_count) 2836 fp_possible = 0; 2837 else { 2838 raid = MR_LdRaidGet(ld, local_map_ptr); 2839 if (!(raid->capability.fpNonRWCapable)) 2840 fp_possible = 0; 2841 } 2842 } else 2843 fp_possible = 0; 2844 2845 if (!fp_possible) { 2846 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 2847 io_request->DevHandle = cpu_to_le16(device_id); 2848 io_request->LUN[1] = scmd->device->lun; 2849 pRAID_Context->timeout_value = 2850 cpu_to_le16 (scmd->request->timeout / HZ); 2851 cmd->request_desc->SCSIIO.RequestFlags = 2852 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 2853 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2854 } else { 2855 2856 /* set RAID context values */ 2857 pRAID_Context->config_seq_num = raid->seqNum; 2858 if (instance->adapter_type != VENTURA_SERIES) 2859 pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ; 2860 pRAID_Context->timeout_value = 2861 cpu_to_le16(raid->fpIoTimeoutForLd); 2862 2863 /* get the DevHandle for the PD (since this is 2864 fpNonRWCapable, this is a single disk RAID0) */ 2865 span = physArm = 0; 2866 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr); 2867 pd = MR_ArPdGet(arRef, physArm, local_map_ptr); 2868 devHandle = MR_PdDevHandleGet(pd, local_map_ptr); 2869 2870 /* build request descriptor */ 2871 cmd->request_desc->SCSIIO.RequestFlags = 2872 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << 2873 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2874 cmd->request_desc->SCSIIO.DevHandle = devHandle; 2875 2876 /* populate the LUN field */ 2877 memcpy(io_request->LUN, raid->LUN, 8); 2878 2879 /* build the raidScsiIO structure */ 2880 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 2881 io_request->DevHandle = devHandle; 2882 } 2883 } 2884 2885 /** 2886 * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd 2887 * @instance: Adapter soft state 2888 * @scp: SCSI command 2889 * @cmd: Command to be prepared 2890 * @fp_possible: parameter to detect fast path or firmware path io. 2891 * 2892 * Prepares the io_request frame for rw/non-rw io cmds for syspds 2893 */ 2894 static void 2895 megasas_build_syspd_fusion(struct megasas_instance *instance, 2896 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd, 2897 bool fp_possible) 2898 { 2899 u32 device_id; 2900 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2901 u16 pd_index = 0; 2902 u16 os_timeout_value; 2903 u16 timeout_limit; 2904 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2905 struct RAID_CONTEXT *pRAID_Context; 2906 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 2907 struct MR_PRIV_DEVICE *mr_device_priv_data; 2908 struct fusion_context *fusion = instance->ctrl_context; 2909 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1]; 2910 2911 device_id = MEGASAS_DEV_INDEX(scmd); 2912 pd_index = MEGASAS_PD_INDEX(scmd); 2913 os_timeout_value = scmd->request->timeout / HZ; 2914 mr_device_priv_data = scmd->device->hostdata; 2915 cmd->pd_interface = mr_device_priv_data->interface_type; 2916 2917 io_request = cmd->io_request; 2918 /* get RAID_Context pointer */ 2919 pRAID_Context = &io_request->RaidContext.raid_context; 2920 pRAID_Context->reg_lock_flags = 0; 2921 pRAID_Context->reg_lock_row_lba = 0; 2922 pRAID_Context->reg_lock_length = 0; 2923 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); 2924 io_request->LUN[1] = scmd->device->lun; 2925 pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD 2926 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT; 2927 2928 /* If FW supports PD sequence number */ 2929 if (instance->use_seqnum_jbod_fp && 2930 instance->pd_list[pd_index].driveType == TYPE_DISK) { 2931 /* TgtId must be incremented by 255 as jbod seq number is index 2932 * below raid map 2933 */ 2934 /* More than 256 PD/JBOD support for Ventura */ 2935 if (instance->support_morethan256jbod) 2936 pRAID_Context->virtual_disk_tgt_id = 2937 pd_sync->seq[pd_index].pd_target_id; 2938 else 2939 pRAID_Context->virtual_disk_tgt_id = 2940 cpu_to_le16(device_id + (MAX_PHYSICAL_DEVICES - 1)); 2941 pRAID_Context->config_seq_num = pd_sync->seq[pd_index].seqNum; 2942 io_request->DevHandle = pd_sync->seq[pd_index].devHandle; 2943 if (instance->adapter_type == VENTURA_SERIES) { 2944 io_request->RaidContext.raid_context_g35.routing_flags |= 2945 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2946 io_request->RaidContext.raid_context_g35.nseg_type |= 2947 (1 << RAID_CONTEXT_NSEG_SHIFT); 2948 io_request->RaidContext.raid_context_g35.nseg_type |= 2949 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2950 } else { 2951 pRAID_Context->type = MPI2_TYPE_CUDA; 2952 pRAID_Context->nseg = 0x1; 2953 pRAID_Context->reg_lock_flags |= 2954 (MR_RL_FLAGS_SEQ_NUM_ENABLE|MR_RL_FLAGS_GRANT_DESTINATION_CUDA); 2955 } 2956 } else if (fusion->fast_path_io) { 2957 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 2958 pRAID_Context->config_seq_num = 0; 2959 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 2960 io_request->DevHandle = 2961 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl; 2962 } else { 2963 /* Want to send all IO via FW path */ 2964 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 2965 pRAID_Context->config_seq_num = 0; 2966 io_request->DevHandle = cpu_to_le16(0xFFFF); 2967 } 2968 2969 cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle; 2970 2971 cmd->request_desc->SCSIIO.MSIxIndex = 2972 instance->reply_map[raw_smp_processor_id()]; 2973 2974 if (!fp_possible) { 2975 /* system pd firmware path */ 2976 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 2977 cmd->request_desc->SCSIIO.RequestFlags = 2978 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 2979 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2980 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value); 2981 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 2982 } else { 2983 if (os_timeout_value) 2984 os_timeout_value++; 2985 2986 /* system pd Fast Path */ 2987 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 2988 timeout_limit = (scmd->device->type == TYPE_DISK) ? 2989 255 : 0xFFFF; 2990 pRAID_Context->timeout_value = 2991 cpu_to_le16((os_timeout_value > timeout_limit) ? 2992 timeout_limit : os_timeout_value); 2993 if (instance->adapter_type >= INVADER_SERIES) 2994 io_request->IoFlags |= 2995 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 2996 2997 cmd->request_desc->SCSIIO.RequestFlags = 2998 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << 2999 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3000 } 3001 } 3002 3003 /** 3004 * megasas_build_io_fusion - Prepares IOs to devices 3005 * @instance: Adapter soft state 3006 * @scp: SCSI command 3007 * @cmd: Command to be prepared 3008 * 3009 * Invokes helper functions to prepare request frames 3010 * and sets flags appropriate for IO/Non-IO cmd 3011 */ 3012 int 3013 megasas_build_io_fusion(struct megasas_instance *instance, 3014 struct scsi_cmnd *scp, 3015 struct megasas_cmd_fusion *cmd) 3016 { 3017 int sge_count; 3018 u8 cmd_type; 3019 struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request; 3020 struct MR_PRIV_DEVICE *mr_device_priv_data; 3021 mr_device_priv_data = scp->device->hostdata; 3022 3023 /* Zero out some fields so they don't get reused */ 3024 memset(io_request->LUN, 0x0, 8); 3025 io_request->CDB.EEDP32.PrimaryReferenceTag = 0; 3026 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0; 3027 io_request->EEDPFlags = 0; 3028 io_request->Control = 0; 3029 io_request->EEDPBlockSize = 0; 3030 io_request->ChainOffset = 0; 3031 io_request->RaidContext.raid_context.raid_flags = 0; 3032 io_request->RaidContext.raid_context.type = 0; 3033 io_request->RaidContext.raid_context.nseg = 0; 3034 3035 memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len); 3036 /* 3037 * Just the CDB length,rest of the Flags are zero 3038 * This will be modified for FP in build_ldio_fusion 3039 */ 3040 io_request->IoFlags = cpu_to_le16(scp->cmd_len); 3041 3042 switch (cmd_type = megasas_cmd_type(scp)) { 3043 case READ_WRITE_LDIO: 3044 megasas_build_ldio_fusion(instance, scp, cmd); 3045 break; 3046 case NON_READ_WRITE_LDIO: 3047 megasas_build_ld_nonrw_fusion(instance, scp, cmd); 3048 break; 3049 case READ_WRITE_SYSPDIO: 3050 megasas_build_syspd_fusion(instance, scp, cmd, true); 3051 break; 3052 case NON_READ_WRITE_SYSPDIO: 3053 if (instance->secure_jbod_support || 3054 mr_device_priv_data->is_tm_capable) 3055 megasas_build_syspd_fusion(instance, scp, cmd, false); 3056 else 3057 megasas_build_syspd_fusion(instance, scp, cmd, true); 3058 break; 3059 default: 3060 break; 3061 } 3062 3063 /* 3064 * Construct SGL 3065 */ 3066 3067 sge_count = megasas_make_sgl(instance, scp, cmd); 3068 3069 if (sge_count > instance->max_num_sge || (sge_count < 0)) { 3070 dev_err(&instance->pdev->dev, 3071 "%s %d sge_count (%d) is out of range. Range is: 0-%d\n", 3072 __func__, __LINE__, sge_count, instance->max_num_sge); 3073 return 1; 3074 } 3075 3076 if (instance->adapter_type == VENTURA_SERIES) { 3077 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count); 3078 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags); 3079 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type); 3080 } else { 3081 /* numSGE store lower 8 bit of sge_count. 3082 * numSGEExt store higher 8 bit of sge_count 3083 */ 3084 io_request->RaidContext.raid_context.num_sge = sge_count; 3085 io_request->RaidContext.raid_context.num_sge_ext = 3086 (u8)(sge_count >> 8); 3087 } 3088 3089 io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING); 3090 3091 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 3092 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE); 3093 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 3094 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ); 3095 3096 io_request->SGLOffset0 = 3097 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4; 3098 3099 io_request->SenseBufferLowAddress = 3100 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr)); 3101 io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE; 3102 3103 cmd->scmd = scp; 3104 scp->SCp.ptr = (char *)cmd; 3105 3106 return 0; 3107 } 3108 3109 static union MEGASAS_REQUEST_DESCRIPTOR_UNION * 3110 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index) 3111 { 3112 u8 *p; 3113 struct fusion_context *fusion; 3114 3115 fusion = instance->ctrl_context; 3116 p = fusion->req_frames_desc + 3117 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index; 3118 3119 return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p; 3120 } 3121 3122 3123 /* megasas_prepate_secondRaid1_IO 3124 * It prepares the raid 1 second IO 3125 */ 3126 void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance, 3127 struct megasas_cmd_fusion *cmd, 3128 struct megasas_cmd_fusion *r1_cmd) 3129 { 3130 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL; 3131 struct fusion_context *fusion; 3132 fusion = instance->ctrl_context; 3133 req_desc = cmd->request_desc; 3134 /* copy the io request frame as well as 8 SGEs data for r1 command*/ 3135 memcpy(r1_cmd->io_request, cmd->io_request, 3136 (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST))); 3137 memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL, 3138 (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION))); 3139 /*sense buffer is different for r1 command*/ 3140 r1_cmd->io_request->SenseBufferLowAddress = 3141 cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr)); 3142 r1_cmd->scmd = cmd->scmd; 3143 req_desc2 = megasas_get_request_descriptor(instance, 3144 (r1_cmd->index - 1)); 3145 req_desc2->Words = 0; 3146 r1_cmd->request_desc = req_desc2; 3147 req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index); 3148 req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags; 3149 r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle; 3150 r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle; 3151 r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle; 3152 cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid = 3153 cpu_to_le16(r1_cmd->index); 3154 r1_cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid = 3155 cpu_to_le16(cmd->index); 3156 /*MSIxIndex of both commands request descriptors should be same*/ 3157 r1_cmd->request_desc->SCSIIO.MSIxIndex = 3158 cmd->request_desc->SCSIIO.MSIxIndex; 3159 /*span arm is different for r1 cmd*/ 3160 r1_cmd->io_request->RaidContext.raid_context_g35.span_arm = 3161 cmd->io_request->RaidContext.raid_context_g35.span_arm + 1; 3162 } 3163 3164 /** 3165 * megasas_build_and_issue_cmd_fusion -Main routine for building and 3166 * issuing non IOCTL cmd 3167 * @instance: Adapter soft state 3168 * @scmd: pointer to scsi cmd from OS 3169 */ 3170 static u32 3171 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance, 3172 struct scsi_cmnd *scmd) 3173 { 3174 struct megasas_cmd_fusion *cmd, *r1_cmd = NULL; 3175 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3176 u32 index; 3177 struct fusion_context *fusion; 3178 3179 fusion = instance->ctrl_context; 3180 3181 if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) && 3182 instance->ldio_threshold && 3183 (atomic_inc_return(&instance->ldio_outstanding) > 3184 instance->ldio_threshold)) { 3185 atomic_dec(&instance->ldio_outstanding); 3186 return SCSI_MLQUEUE_DEVICE_BUSY; 3187 } 3188 3189 if (atomic_inc_return(&instance->fw_outstanding) > 3190 instance->host->can_queue) { 3191 atomic_dec(&instance->fw_outstanding); 3192 return SCSI_MLQUEUE_HOST_BUSY; 3193 } 3194 3195 cmd = megasas_get_cmd_fusion(instance, scmd->request->tag); 3196 3197 if (!cmd) { 3198 atomic_dec(&instance->fw_outstanding); 3199 return SCSI_MLQUEUE_HOST_BUSY; 3200 } 3201 3202 index = cmd->index; 3203 3204 req_desc = megasas_get_request_descriptor(instance, index-1); 3205 3206 req_desc->Words = 0; 3207 cmd->request_desc = req_desc; 3208 3209 if (megasas_build_io_fusion(instance, scmd, cmd)) { 3210 megasas_return_cmd_fusion(instance, cmd); 3211 dev_err(&instance->pdev->dev, "Error building command\n"); 3212 cmd->request_desc = NULL; 3213 atomic_dec(&instance->fw_outstanding); 3214 return SCSI_MLQUEUE_HOST_BUSY; 3215 } 3216 3217 req_desc = cmd->request_desc; 3218 req_desc->SCSIIO.SMID = cpu_to_le16(index); 3219 3220 if (cmd->io_request->ChainOffset != 0 && 3221 cmd->io_request->ChainOffset != 0xF) 3222 dev_err(&instance->pdev->dev, "The chain offset value is not " 3223 "correct : %x\n", cmd->io_request->ChainOffset); 3224 /* 3225 * if it is raid 1/10 fp write capable. 3226 * try to get second command from pool and construct it. 3227 * From FW, it has confirmed that lba values of two PDs 3228 * corresponds to single R1/10 LD are always same 3229 * 3230 */ 3231 /* driver side count always should be less than max_fw_cmds 3232 * to get new command 3233 */ 3234 if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) { 3235 r1_cmd = megasas_get_cmd_fusion(instance, 3236 (scmd->request->tag + instance->max_fw_cmds)); 3237 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd); 3238 } 3239 3240 3241 /* 3242 * Issue the command to the FW 3243 */ 3244 3245 megasas_fire_cmd_fusion(instance, req_desc); 3246 3247 if (r1_cmd) 3248 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc); 3249 3250 3251 return 0; 3252 } 3253 3254 /** 3255 * megasas_complete_r1_command - 3256 * completes R1 FP write commands which has valid peer smid 3257 * @instance: Adapter soft state 3258 * @cmd_fusion: MPT command frame 3259 * 3260 */ 3261 static inline void 3262 megasas_complete_r1_command(struct megasas_instance *instance, 3263 struct megasas_cmd_fusion *cmd) 3264 { 3265 u8 *sense, status, ex_status; 3266 u32 data_length; 3267 u16 peer_smid; 3268 struct fusion_context *fusion; 3269 struct megasas_cmd_fusion *r1_cmd = NULL; 3270 struct scsi_cmnd *scmd_local = NULL; 3271 struct RAID_CONTEXT_G35 *rctx_g35; 3272 3273 rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35; 3274 fusion = instance->ctrl_context; 3275 peer_smid = le16_to_cpu(rctx_g35->smid.peer_smid); 3276 3277 r1_cmd = fusion->cmd_list[peer_smid - 1]; 3278 scmd_local = cmd->scmd; 3279 status = rctx_g35->status; 3280 ex_status = rctx_g35->ex_status; 3281 data_length = cmd->io_request->DataLength; 3282 sense = cmd->sense; 3283 3284 cmd->cmd_completed = true; 3285 3286 /* Check if peer command is completed or not*/ 3287 if (r1_cmd->cmd_completed) { 3288 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35; 3289 if (rctx_g35->status != MFI_STAT_OK) { 3290 status = rctx_g35->status; 3291 ex_status = rctx_g35->ex_status; 3292 data_length = r1_cmd->io_request->DataLength; 3293 sense = r1_cmd->sense; 3294 } 3295 3296 megasas_return_cmd_fusion(instance, r1_cmd); 3297 map_cmd_status(fusion, scmd_local, status, ex_status, 3298 le32_to_cpu(data_length), sense); 3299 if (instance->ldio_threshold && 3300 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) 3301 atomic_dec(&instance->ldio_outstanding); 3302 scmd_local->SCp.ptr = NULL; 3303 megasas_return_cmd_fusion(instance, cmd); 3304 scsi_dma_unmap(scmd_local); 3305 scmd_local->scsi_done(scmd_local); 3306 } 3307 } 3308 3309 /** 3310 * complete_cmd_fusion - Completes command 3311 * @instance: Adapter soft state 3312 * Completes all commands that is in reply descriptor queue 3313 */ 3314 int 3315 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex) 3316 { 3317 union MPI2_REPLY_DESCRIPTORS_UNION *desc; 3318 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc; 3319 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req; 3320 struct fusion_context *fusion; 3321 struct megasas_cmd *cmd_mfi; 3322 struct megasas_cmd_fusion *cmd_fusion; 3323 u16 smid, num_completed; 3324 u8 reply_descript_type, *sense, status, extStatus; 3325 u32 device_id, data_length; 3326 union desc_value d_val; 3327 struct LD_LOAD_BALANCE_INFO *lbinfo; 3328 int threshold_reply_count = 0; 3329 struct scsi_cmnd *scmd_local = NULL; 3330 struct MR_TASK_MANAGE_REQUEST *mr_tm_req; 3331 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req; 3332 3333 fusion = instance->ctrl_context; 3334 3335 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 3336 return IRQ_HANDLED; 3337 3338 desc = fusion->reply_frames_desc[MSIxIndex] + 3339 fusion->last_reply_idx[MSIxIndex]; 3340 3341 reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; 3342 3343 d_val.word = desc->Words; 3344 3345 reply_descript_type = reply_desc->ReplyFlags & 3346 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; 3347 3348 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) 3349 return IRQ_NONE; 3350 3351 num_completed = 0; 3352 3353 while (d_val.u.low != cpu_to_le32(UINT_MAX) && 3354 d_val.u.high != cpu_to_le32(UINT_MAX)) { 3355 3356 smid = le16_to_cpu(reply_desc->SMID); 3357 cmd_fusion = fusion->cmd_list[smid - 1]; 3358 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *) 3359 cmd_fusion->io_request; 3360 3361 scmd_local = cmd_fusion->scmd; 3362 status = scsi_io_req->RaidContext.raid_context.status; 3363 extStatus = scsi_io_req->RaidContext.raid_context.ex_status; 3364 sense = cmd_fusion->sense; 3365 data_length = scsi_io_req->DataLength; 3366 3367 switch (scsi_io_req->Function) { 3368 case MPI2_FUNCTION_SCSI_TASK_MGMT: 3369 mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *) 3370 cmd_fusion->io_request; 3371 mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) 3372 &mr_tm_req->TmRequest; 3373 dev_dbg(&instance->pdev->dev, "TM completion:" 3374 "type: 0x%x TaskMID: 0x%x\n", 3375 mpi_tm_req->TaskType, mpi_tm_req->TaskMID); 3376 complete(&cmd_fusion->done); 3377 break; 3378 case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/ 3379 /* Update load balancing info */ 3380 if (fusion->load_balance_info && 3381 (cmd_fusion->scmd->SCp.Status & 3382 MEGASAS_LOAD_BALANCE_FLAG)) { 3383 device_id = MEGASAS_DEV_INDEX(scmd_local); 3384 lbinfo = &fusion->load_balance_info[device_id]; 3385 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]); 3386 cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; 3387 } 3388 //Fall thru and complete IO 3389 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */ 3390 atomic_dec(&instance->fw_outstanding); 3391 if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) { 3392 map_cmd_status(fusion, scmd_local, status, 3393 extStatus, le32_to_cpu(data_length), 3394 sense); 3395 if (instance->ldio_threshold && 3396 (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)) 3397 atomic_dec(&instance->ldio_outstanding); 3398 scmd_local->SCp.ptr = NULL; 3399 megasas_return_cmd_fusion(instance, cmd_fusion); 3400 scsi_dma_unmap(scmd_local); 3401 scmd_local->scsi_done(scmd_local); 3402 } else /* Optimal VD - R1 FP command completion. */ 3403 megasas_complete_r1_command(instance, cmd_fusion); 3404 break; 3405 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */ 3406 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 3407 /* Poll mode. Dummy free. 3408 * In case of Interrupt mode, caller has reverse check. 3409 */ 3410 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) { 3411 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE; 3412 megasas_return_cmd(instance, cmd_mfi); 3413 } else 3414 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 3415 break; 3416 } 3417 3418 fusion->last_reply_idx[MSIxIndex]++; 3419 if (fusion->last_reply_idx[MSIxIndex] >= 3420 fusion->reply_q_depth) 3421 fusion->last_reply_idx[MSIxIndex] = 0; 3422 3423 desc->Words = cpu_to_le64(ULLONG_MAX); 3424 num_completed++; 3425 threshold_reply_count++; 3426 3427 /* Get the next reply descriptor */ 3428 if (!fusion->last_reply_idx[MSIxIndex]) 3429 desc = fusion->reply_frames_desc[MSIxIndex]; 3430 else 3431 desc++; 3432 3433 reply_desc = 3434 (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; 3435 3436 d_val.word = desc->Words; 3437 3438 reply_descript_type = reply_desc->ReplyFlags & 3439 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; 3440 3441 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) 3442 break; 3443 /* 3444 * Write to reply post host index register after completing threshold 3445 * number of reply counts and still there are more replies in reply queue 3446 * pending to be completed 3447 */ 3448 if (threshold_reply_count >= THRESHOLD_REPLY_COUNT) { 3449 if (instance->msix_combined) 3450 writel(((MSIxIndex & 0x7) << 24) | 3451 fusion->last_reply_idx[MSIxIndex], 3452 instance->reply_post_host_index_addr[MSIxIndex/8]); 3453 else 3454 writel((MSIxIndex << 24) | 3455 fusion->last_reply_idx[MSIxIndex], 3456 instance->reply_post_host_index_addr[0]); 3457 threshold_reply_count = 0; 3458 } 3459 } 3460 3461 if (!num_completed) 3462 return IRQ_NONE; 3463 3464 wmb(); 3465 if (instance->msix_combined) 3466 writel(((MSIxIndex & 0x7) << 24) | 3467 fusion->last_reply_idx[MSIxIndex], 3468 instance->reply_post_host_index_addr[MSIxIndex/8]); 3469 else 3470 writel((MSIxIndex << 24) | 3471 fusion->last_reply_idx[MSIxIndex], 3472 instance->reply_post_host_index_addr[0]); 3473 megasas_check_and_restore_queue_depth(instance); 3474 return IRQ_HANDLED; 3475 } 3476 3477 /** 3478 * megasas_sync_irqs - Synchronizes all IRQs owned by adapter 3479 * @instance: Adapter soft state 3480 */ 3481 void megasas_sync_irqs(unsigned long instance_addr) 3482 { 3483 u32 count, i; 3484 struct megasas_instance *instance = 3485 (struct megasas_instance *)instance_addr; 3486 3487 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3488 3489 for (i = 0; i < count; i++) 3490 synchronize_irq(pci_irq_vector(instance->pdev, i)); 3491 } 3492 3493 /** 3494 * megasas_complete_cmd_dpc_fusion - Completes command 3495 * @instance: Adapter soft state 3496 * 3497 * Tasklet to complete cmds 3498 */ 3499 void 3500 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr) 3501 { 3502 struct megasas_instance *instance = 3503 (struct megasas_instance *)instance_addr; 3504 unsigned long flags; 3505 u32 count, MSIxIndex; 3506 3507 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3508 3509 /* If we have already declared adapter dead, donot complete cmds */ 3510 spin_lock_irqsave(&instance->hba_lock, flags); 3511 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 3512 spin_unlock_irqrestore(&instance->hba_lock, flags); 3513 return; 3514 } 3515 spin_unlock_irqrestore(&instance->hba_lock, flags); 3516 3517 for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++) 3518 complete_cmd_fusion(instance, MSIxIndex); 3519 } 3520 3521 /** 3522 * megasas_isr_fusion - isr entry point 3523 */ 3524 irqreturn_t megasas_isr_fusion(int irq, void *devp) 3525 { 3526 struct megasas_irq_context *irq_context = devp; 3527 struct megasas_instance *instance = irq_context->instance; 3528 u32 mfiStatus, fw_state, dma_state; 3529 3530 if (instance->mask_interrupts) 3531 return IRQ_NONE; 3532 3533 if (!instance->msix_vectors) { 3534 mfiStatus = instance->instancet->clear_intr(instance->reg_set); 3535 if (!mfiStatus) 3536 return IRQ_NONE; 3537 } 3538 3539 /* If we are resetting, bail */ 3540 if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) { 3541 instance->instancet->clear_intr(instance->reg_set); 3542 return IRQ_HANDLED; 3543 } 3544 3545 if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) { 3546 instance->instancet->clear_intr(instance->reg_set); 3547 /* If we didn't complete any commands, check for FW fault */ 3548 fw_state = instance->instancet->read_fw_status_reg( 3549 instance->reg_set) & MFI_STATE_MASK; 3550 dma_state = instance->instancet->read_fw_status_reg 3551 (instance->reg_set) & MFI_STATE_DMADONE; 3552 if (instance->crash_dump_drv_support && 3553 instance->crash_dump_app_support) { 3554 /* Start collecting crash, if DMA bit is done */ 3555 if ((fw_state == MFI_STATE_FAULT) && dma_state) 3556 schedule_work(&instance->crash_init); 3557 else if (fw_state == MFI_STATE_FAULT) { 3558 if (instance->unload == 0) 3559 schedule_work(&instance->work_init); 3560 } 3561 } else if (fw_state == MFI_STATE_FAULT) { 3562 dev_warn(&instance->pdev->dev, "Iop2SysDoorbellInt" 3563 "for scsi%d\n", instance->host->host_no); 3564 if (instance->unload == 0) 3565 schedule_work(&instance->work_init); 3566 } 3567 } 3568 3569 return IRQ_HANDLED; 3570 } 3571 3572 /** 3573 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru 3574 * @instance: Adapter soft state 3575 * mfi_cmd: megasas_cmd pointer 3576 * 3577 */ 3578 void 3579 build_mpt_mfi_pass_thru(struct megasas_instance *instance, 3580 struct megasas_cmd *mfi_cmd) 3581 { 3582 struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain; 3583 struct MPI2_RAID_SCSI_IO_REQUEST *io_req; 3584 struct megasas_cmd_fusion *cmd; 3585 struct fusion_context *fusion; 3586 struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr; 3587 3588 fusion = instance->ctrl_context; 3589 3590 cmd = megasas_get_cmd_fusion(instance, 3591 instance->max_scsi_cmds + mfi_cmd->index); 3592 3593 /* Save the smid. To be used for returning the cmd */ 3594 mfi_cmd->context.smid = cmd->index; 3595 3596 /* 3597 * For cmds where the flag is set, store the flag and check 3598 * on completion. For cmds with this flag, don't call 3599 * megasas_complete_cmd 3600 */ 3601 3602 if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE)) 3603 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE; 3604 3605 io_req = cmd->io_request; 3606 3607 if (instance->adapter_type >= INVADER_SERIES) { 3608 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = 3609 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL; 3610 sgl_ptr_end += fusion->max_sge_in_main_msg - 1; 3611 sgl_ptr_end->Flags = 0; 3612 } 3613 3614 mpi25_ieee_chain = 3615 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain; 3616 3617 io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST; 3618 io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, 3619 SGL) / 4; 3620 io_req->ChainOffset = fusion->chain_offset_mfi_pthru; 3621 3622 mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr); 3623 3624 mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | 3625 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR; 3626 3627 mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size); 3628 } 3629 3630 /** 3631 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd 3632 * @instance: Adapter soft state 3633 * @cmd: mfi cmd to build 3634 * 3635 */ 3636 union MEGASAS_REQUEST_DESCRIPTOR_UNION * 3637 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 3638 { 3639 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL; 3640 u16 index; 3641 3642 build_mpt_mfi_pass_thru(instance, cmd); 3643 index = cmd->context.smid; 3644 3645 req_desc = megasas_get_request_descriptor(instance, index - 1); 3646 3647 req_desc->Words = 0; 3648 req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 3649 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3650 3651 req_desc->SCSIIO.SMID = cpu_to_le16(index); 3652 3653 return req_desc; 3654 } 3655 3656 /** 3657 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd 3658 * @instance: Adapter soft state 3659 * @cmd: mfi cmd pointer 3660 * 3661 */ 3662 void 3663 megasas_issue_dcmd_fusion(struct megasas_instance *instance, 3664 struct megasas_cmd *cmd) 3665 { 3666 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3667 3668 req_desc = build_mpt_cmd(instance, cmd); 3669 3670 megasas_fire_cmd_fusion(instance, req_desc); 3671 return; 3672 } 3673 3674 /** 3675 * megasas_release_fusion - Reverses the FW initialization 3676 * @instance: Adapter soft state 3677 */ 3678 void 3679 megasas_release_fusion(struct megasas_instance *instance) 3680 { 3681 megasas_free_ioc_init_cmd(instance); 3682 megasas_free_cmds(instance); 3683 megasas_free_cmds_fusion(instance); 3684 3685 iounmap(instance->reg_set); 3686 3687 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 3688 } 3689 3690 /** 3691 * megasas_read_fw_status_reg_fusion - returns the current FW status value 3692 * @regs: MFI register set 3693 */ 3694 static u32 3695 megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs) 3696 { 3697 return readl(&(regs)->outbound_scratch_pad); 3698 } 3699 3700 /** 3701 * megasas_alloc_host_crash_buffer - Host buffers for Crash dump collection from Firmware 3702 * @instance: Controller's soft instance 3703 * return: Number of allocated host crash buffers 3704 */ 3705 static void 3706 megasas_alloc_host_crash_buffer(struct megasas_instance *instance) 3707 { 3708 unsigned int i; 3709 3710 for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) { 3711 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE); 3712 if (!instance->crash_buf[i]) { 3713 dev_info(&instance->pdev->dev, "Firmware crash dump " 3714 "memory allocation failed at index %d\n", i); 3715 break; 3716 } 3717 } 3718 instance->drv_buf_alloc = i; 3719 } 3720 3721 /** 3722 * megasas_free_host_crash_buffer - Host buffers for Crash dump collection from Firmware 3723 * @instance: Controller's soft instance 3724 */ 3725 void 3726 megasas_free_host_crash_buffer(struct megasas_instance *instance) 3727 { 3728 unsigned int i; 3729 for (i = 0; i < instance->drv_buf_alloc; i++) { 3730 if (instance->crash_buf[i]) 3731 vfree(instance->crash_buf[i]); 3732 } 3733 instance->drv_buf_index = 0; 3734 instance->drv_buf_alloc = 0; 3735 instance->fw_crash_state = UNAVAILABLE; 3736 instance->fw_crash_buffer_size = 0; 3737 } 3738 3739 /** 3740 * megasas_adp_reset_fusion - For controller reset 3741 * @regs: MFI register set 3742 */ 3743 static int 3744 megasas_adp_reset_fusion(struct megasas_instance *instance, 3745 struct megasas_register_set __iomem *regs) 3746 { 3747 u32 host_diag, abs_state, retry; 3748 3749 /* Now try to reset the chip */ 3750 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3751 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3752 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3753 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3754 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3755 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3756 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3757 3758 /* Check that the diag write enable (DRWE) bit is on */ 3759 host_diag = readl(&instance->reg_set->fusion_host_diag); 3760 retry = 0; 3761 while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) { 3762 msleep(100); 3763 host_diag = readl(&instance->reg_set->fusion_host_diag); 3764 if (retry++ == 100) { 3765 dev_warn(&instance->pdev->dev, 3766 "Host diag unlock failed from %s %d\n", 3767 __func__, __LINE__); 3768 break; 3769 } 3770 } 3771 if (!(host_diag & HOST_DIAG_WRITE_ENABLE)) 3772 return -1; 3773 3774 /* Send chip reset command */ 3775 writel(host_diag | HOST_DIAG_RESET_ADAPTER, 3776 &instance->reg_set->fusion_host_diag); 3777 msleep(3000); 3778 3779 /* Make sure reset adapter bit is cleared */ 3780 host_diag = readl(&instance->reg_set->fusion_host_diag); 3781 retry = 0; 3782 while (host_diag & HOST_DIAG_RESET_ADAPTER) { 3783 msleep(100); 3784 host_diag = readl(&instance->reg_set->fusion_host_diag); 3785 if (retry++ == 1000) { 3786 dev_warn(&instance->pdev->dev, 3787 "Diag reset adapter never cleared %s %d\n", 3788 __func__, __LINE__); 3789 break; 3790 } 3791 } 3792 if (host_diag & HOST_DIAG_RESET_ADAPTER) 3793 return -1; 3794 3795 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set) 3796 & MFI_STATE_MASK; 3797 retry = 0; 3798 3799 while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) { 3800 msleep(100); 3801 abs_state = instance->instancet-> 3802 read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; 3803 } 3804 if (abs_state <= MFI_STATE_FW_INIT) { 3805 dev_warn(&instance->pdev->dev, 3806 "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n", 3807 abs_state, __func__, __LINE__); 3808 return -1; 3809 } 3810 3811 return 0; 3812 } 3813 3814 /** 3815 * megasas_check_reset_fusion - For controller reset check 3816 * @regs: MFI register set 3817 */ 3818 static int 3819 megasas_check_reset_fusion(struct megasas_instance *instance, 3820 struct megasas_register_set __iomem *regs) 3821 { 3822 return 0; 3823 } 3824 3825 /* This function waits for outstanding commands on fusion to complete */ 3826 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance, 3827 int reason, int *convert) 3828 { 3829 int i, outstanding, retval = 0, hb_seconds_missed = 0; 3830 u32 fw_state; 3831 3832 for (i = 0; i < resetwaittime; i++) { 3833 /* Check if firmware is in fault state */ 3834 fw_state = instance->instancet->read_fw_status_reg( 3835 instance->reg_set) & MFI_STATE_MASK; 3836 if (fw_state == MFI_STATE_FAULT) { 3837 dev_warn(&instance->pdev->dev, "Found FW in FAULT state," 3838 " will reset adapter scsi%d.\n", 3839 instance->host->host_no); 3840 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 3841 if (instance->requestorId && reason) { 3842 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT" 3843 " state while polling during" 3844 " I/O timeout handling for %d\n", 3845 instance->host->host_no); 3846 *convert = 1; 3847 } 3848 3849 retval = 1; 3850 goto out; 3851 } 3852 3853 if (reason == MFI_IO_TIMEOUT_OCR) { 3854 dev_info(&instance->pdev->dev, 3855 "MFI IO is timed out, initiating OCR\n"); 3856 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 3857 retval = 1; 3858 goto out; 3859 } 3860 3861 /* If SR-IOV VF mode & heartbeat timeout, don't wait */ 3862 if (instance->requestorId && !reason) { 3863 retval = 1; 3864 goto out; 3865 } 3866 3867 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */ 3868 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) { 3869 if (instance->hb_host_mem->HB.fwCounter != 3870 instance->hb_host_mem->HB.driverCounter) { 3871 instance->hb_host_mem->HB.driverCounter = 3872 instance->hb_host_mem->HB.fwCounter; 3873 hb_seconds_missed = 0; 3874 } else { 3875 hb_seconds_missed++; 3876 if (hb_seconds_missed == 3877 (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) { 3878 dev_warn(&instance->pdev->dev, "SR-IOV:" 3879 " Heartbeat never completed " 3880 " while polling during I/O " 3881 " timeout handling for " 3882 "scsi%d.\n", 3883 instance->host->host_no); 3884 *convert = 1; 3885 retval = 1; 3886 goto out; 3887 } 3888 } 3889 } 3890 3891 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 3892 outstanding = atomic_read(&instance->fw_outstanding); 3893 if (!outstanding) 3894 goto out; 3895 3896 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 3897 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d " 3898 "commands to complete for scsi%d\n", i, 3899 outstanding, instance->host->host_no); 3900 } 3901 msleep(1000); 3902 } 3903 3904 if (atomic_read(&instance->fw_outstanding)) { 3905 dev_err(&instance->pdev->dev, "pending commands remain after waiting, " 3906 "will reset adapter scsi%d.\n", 3907 instance->host->host_no); 3908 *convert = 1; 3909 retval = 1; 3910 } 3911 out: 3912 return retval; 3913 } 3914 3915 void megasas_reset_reply_desc(struct megasas_instance *instance) 3916 { 3917 int i, j, count; 3918 struct fusion_context *fusion; 3919 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; 3920 3921 fusion = instance->ctrl_context; 3922 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3923 for (i = 0 ; i < count ; i++) { 3924 fusion->last_reply_idx[i] = 0; 3925 reply_desc = fusion->reply_frames_desc[i]; 3926 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++) 3927 reply_desc->Words = cpu_to_le64(ULLONG_MAX); 3928 } 3929 } 3930 3931 /* 3932 * megasas_refire_mgmt_cmd : Re-fire management commands 3933 * @instance: Controller's soft instance 3934 */ 3935 void megasas_refire_mgmt_cmd(struct megasas_instance *instance) 3936 { 3937 int j; 3938 struct megasas_cmd_fusion *cmd_fusion; 3939 struct fusion_context *fusion; 3940 struct megasas_cmd *cmd_mfi; 3941 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3942 u16 smid; 3943 bool refire_cmd = 0; 3944 u8 result; 3945 u32 opcode = 0; 3946 3947 fusion = instance->ctrl_context; 3948 3949 /* Re-fire management commands. 3950 * Do not traverse complet MPT frame pool. Start from max_scsi_cmds. 3951 */ 3952 for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) { 3953 cmd_fusion = fusion->cmd_list[j]; 3954 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 3955 smid = le16_to_cpu(cmd_mfi->context.smid); 3956 result = REFIRE_CMD; 3957 3958 if (!smid) 3959 continue; 3960 3961 req_desc = megasas_get_request_descriptor(instance, smid - 1); 3962 3963 switch (cmd_mfi->frame->hdr.cmd) { 3964 case MFI_CMD_DCMD: 3965 opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode); 3966 /* Do not refire shutdown command */ 3967 if (opcode == MR_DCMD_CTRL_SHUTDOWN) { 3968 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK; 3969 result = COMPLETE_CMD; 3970 break; 3971 } 3972 3973 refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) && 3974 (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) && 3975 !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE); 3976 3977 if (!refire_cmd) 3978 result = RETURN_CMD; 3979 3980 break; 3981 case MFI_CMD_NVME: 3982 if (!instance->support_nvme_passthru) { 3983 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD; 3984 result = COMPLETE_CMD; 3985 } 3986 3987 break; 3988 default: 3989 break; 3990 } 3991 3992 switch (result) { 3993 case REFIRE_CMD: 3994 megasas_fire_cmd_fusion(instance, req_desc); 3995 break; 3996 case RETURN_CMD: 3997 megasas_return_cmd(instance, cmd_mfi); 3998 break; 3999 case COMPLETE_CMD: 4000 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 4001 break; 4002 } 4003 } 4004 } 4005 4006 /* 4007 * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device 4008 * @instance: per adapter struct 4009 * @channel: the channel assigned by the OS 4010 * @id: the id assigned by the OS 4011 * 4012 * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED 4013 */ 4014 4015 static int megasas_track_scsiio(struct megasas_instance *instance, 4016 int id, int channel) 4017 { 4018 int i, found = 0; 4019 struct megasas_cmd_fusion *cmd_fusion; 4020 struct fusion_context *fusion; 4021 fusion = instance->ctrl_context; 4022 4023 for (i = 0 ; i < instance->max_scsi_cmds; i++) { 4024 cmd_fusion = fusion->cmd_list[i]; 4025 if (cmd_fusion->scmd && 4026 (cmd_fusion->scmd->device->id == id && 4027 cmd_fusion->scmd->device->channel == channel)) { 4028 dev_info(&instance->pdev->dev, 4029 "SCSI commands pending to target" 4030 "channel %d id %d \tSMID: 0x%x\n", 4031 channel, id, cmd_fusion->index); 4032 scsi_print_command(cmd_fusion->scmd); 4033 found = 1; 4034 break; 4035 } 4036 } 4037 4038 return found ? FAILED : SUCCESS; 4039 } 4040 4041 /** 4042 * megasas_tm_response_code - translation of device response code 4043 * @ioc: per adapter object 4044 * @mpi_reply: MPI reply returned by firmware 4045 * 4046 * Return nothing. 4047 */ 4048 static void 4049 megasas_tm_response_code(struct megasas_instance *instance, 4050 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply) 4051 { 4052 char *desc; 4053 4054 switch (mpi_reply->ResponseCode) { 4055 case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE: 4056 desc = "task management request completed"; 4057 break; 4058 case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME: 4059 desc = "invalid frame"; 4060 break; 4061 case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED: 4062 desc = "task management request not supported"; 4063 break; 4064 case MPI2_SCSITASKMGMT_RSP_TM_FAILED: 4065 desc = "task management request failed"; 4066 break; 4067 case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED: 4068 desc = "task management request succeeded"; 4069 break; 4070 case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN: 4071 desc = "invalid lun"; 4072 break; 4073 case 0xA: 4074 desc = "overlapped tag attempted"; 4075 break; 4076 case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC: 4077 desc = "task queued, however not sent to target"; 4078 break; 4079 default: 4080 desc = "unknown"; 4081 break; 4082 } 4083 dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n", 4084 mpi_reply->ResponseCode, desc); 4085 dev_dbg(&instance->pdev->dev, 4086 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo" 4087 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n", 4088 mpi_reply->TerminationCount, mpi_reply->DevHandle, 4089 mpi_reply->Function, mpi_reply->TaskType, 4090 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo); 4091 } 4092 4093 /** 4094 * megasas_issue_tm - main routine for sending tm requests 4095 * @instance: per adapter struct 4096 * @device_handle: device handle 4097 * @channel: the channel assigned by the OS 4098 * @id: the id assigned by the OS 4099 * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c) 4100 * @smid_task: smid assigned to the task 4101 * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF 4102 * Context: user 4103 * 4104 * MegaRaid use MPT interface for Task Magement request. 4105 * A generic API for sending task management requests to firmware. 4106 * 4107 * Return SUCCESS or FAILED. 4108 */ 4109 static int 4110 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle, 4111 uint channel, uint id, u16 smid_task, u8 type, 4112 struct MR_PRIV_DEVICE *mr_device_priv_data) 4113 { 4114 struct MR_TASK_MANAGE_REQUEST *mr_request; 4115 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request; 4116 unsigned long timeleft; 4117 struct megasas_cmd_fusion *cmd_fusion; 4118 struct megasas_cmd *cmd_mfi; 4119 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 4120 struct fusion_context *fusion = NULL; 4121 struct megasas_cmd_fusion *scsi_lookup; 4122 int rc; 4123 int timeout = MEGASAS_DEFAULT_TM_TIMEOUT; 4124 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply; 4125 4126 fusion = instance->ctrl_context; 4127 4128 cmd_mfi = megasas_get_cmd(instance); 4129 4130 if (!cmd_mfi) { 4131 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 4132 __func__, __LINE__); 4133 return -ENOMEM; 4134 } 4135 4136 cmd_fusion = megasas_get_cmd_fusion(instance, 4137 instance->max_scsi_cmds + cmd_mfi->index); 4138 4139 /* Save the smid. To be used for returning the cmd */ 4140 cmd_mfi->context.smid = cmd_fusion->index; 4141 4142 req_desc = megasas_get_request_descriptor(instance, 4143 (cmd_fusion->index - 1)); 4144 4145 cmd_fusion->request_desc = req_desc; 4146 req_desc->Words = 0; 4147 4148 mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request; 4149 memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST)); 4150 mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest; 4151 mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT; 4152 mpi_request->DevHandle = cpu_to_le16(device_handle); 4153 mpi_request->TaskType = type; 4154 mpi_request->TaskMID = cpu_to_le16(smid_task); 4155 mpi_request->LUN[1] = 0; 4156 4157 4158 req_desc = cmd_fusion->request_desc; 4159 req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index); 4160 req_desc->HighPriority.RequestFlags = 4161 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY << 4162 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 4163 req_desc->HighPriority.MSIxIndex = 0; 4164 req_desc->HighPriority.LMID = 0; 4165 req_desc->HighPriority.Reserved1 = 0; 4166 4167 if (channel < MEGASAS_MAX_PD_CHANNELS) 4168 mr_request->tmReqFlags.isTMForPD = 1; 4169 else 4170 mr_request->tmReqFlags.isTMForLD = 1; 4171 4172 init_completion(&cmd_fusion->done); 4173 megasas_fire_cmd_fusion(instance, req_desc); 4174 4175 switch (type) { 4176 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK: 4177 timeout = mr_device_priv_data->task_abort_tmo; 4178 break; 4179 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET: 4180 timeout = mr_device_priv_data->target_reset_tmo; 4181 break; 4182 } 4183 4184 timeleft = wait_for_completion_timeout(&cmd_fusion->done, timeout * HZ); 4185 4186 if (!timeleft) { 4187 dev_err(&instance->pdev->dev, 4188 "task mgmt type 0x%x timed out\n", type); 4189 cmd_mfi->flags |= DRV_DCMD_SKIP_REFIRE; 4190 mutex_unlock(&instance->reset_mutex); 4191 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR); 4192 mutex_lock(&instance->reset_mutex); 4193 return rc; 4194 } 4195 4196 mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply; 4197 megasas_tm_response_code(instance, mpi_reply); 4198 4199 megasas_return_cmd(instance, cmd_mfi); 4200 rc = SUCCESS; 4201 switch (type) { 4202 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK: 4203 scsi_lookup = fusion->cmd_list[smid_task - 1]; 4204 4205 if (scsi_lookup->scmd == NULL) 4206 break; 4207 else { 4208 instance->instancet->disable_intr(instance); 4209 megasas_sync_irqs((unsigned long)instance); 4210 instance->instancet->enable_intr(instance); 4211 if (scsi_lookup->scmd == NULL) 4212 break; 4213 } 4214 rc = FAILED; 4215 break; 4216 4217 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET: 4218 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF)) 4219 break; 4220 instance->instancet->disable_intr(instance); 4221 megasas_sync_irqs((unsigned long)instance); 4222 rc = megasas_track_scsiio(instance, id, channel); 4223 instance->instancet->enable_intr(instance); 4224 4225 break; 4226 case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET: 4227 case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK: 4228 break; 4229 default: 4230 rc = FAILED; 4231 break; 4232 } 4233 4234 return rc; 4235 4236 } 4237 4238 /* 4239 * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI 4240 * @instance: per adapter struct 4241 * 4242 * Return Non Zero index, if SMID found in outstanding commands 4243 */ 4244 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd) 4245 { 4246 int i, ret = 0; 4247 struct megasas_instance *instance; 4248 struct megasas_cmd_fusion *cmd_fusion; 4249 struct fusion_context *fusion; 4250 4251 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4252 4253 fusion = instance->ctrl_context; 4254 4255 for (i = 0; i < instance->max_scsi_cmds; i++) { 4256 cmd_fusion = fusion->cmd_list[i]; 4257 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) { 4258 scmd_printk(KERN_NOTICE, scmd, "Abort request is for" 4259 " SMID: %d\n", cmd_fusion->index); 4260 ret = cmd_fusion->index; 4261 break; 4262 } 4263 } 4264 4265 return ret; 4266 } 4267 4268 /* 4269 * megasas_get_tm_devhandle - Get devhandle for TM request 4270 * @sdev- OS provided scsi device 4271 * 4272 * Returns- devhandle/targetID of SCSI device 4273 */ 4274 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev) 4275 { 4276 u16 pd_index = 0; 4277 u32 device_id; 4278 struct megasas_instance *instance; 4279 struct fusion_context *fusion; 4280 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 4281 u16 devhandle = (u16)ULONG_MAX; 4282 4283 instance = (struct megasas_instance *)sdev->host->hostdata; 4284 fusion = instance->ctrl_context; 4285 4286 if (!MEGASAS_IS_LOGICAL(sdev)) { 4287 if (instance->use_seqnum_jbod_fp) { 4288 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) 4289 + sdev->id; 4290 pd_sync = (void *)fusion->pd_seq_sync 4291 [(instance->pd_seq_map_id - 1) & 1]; 4292 devhandle = pd_sync->seq[pd_index].devHandle; 4293 } else 4294 sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable" 4295 " without JBOD MAP support from %s %d\n", __func__, __LINE__); 4296 } else { 4297 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) 4298 + sdev->id; 4299 devhandle = device_id; 4300 } 4301 4302 return devhandle; 4303 } 4304 4305 /* 4306 * megasas_task_abort_fusion : SCSI task abort function for fusion adapters 4307 * @scmd : pointer to scsi command object 4308 * 4309 * Return SUCCESS, if command aborted else FAILED 4310 */ 4311 4312 int megasas_task_abort_fusion(struct scsi_cmnd *scmd) 4313 { 4314 struct megasas_instance *instance; 4315 u16 smid, devhandle; 4316 struct fusion_context *fusion; 4317 int ret; 4318 struct MR_PRIV_DEVICE *mr_device_priv_data; 4319 mr_device_priv_data = scmd->device->hostdata; 4320 4321 4322 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4323 fusion = instance->ctrl_context; 4324 4325 scmd_printk(KERN_INFO, scmd, "task abort called for scmd(%p)\n", scmd); 4326 scsi_print_command(scmd); 4327 4328 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 4329 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL," 4330 "SCSI host:%d\n", instance->host->host_no); 4331 ret = FAILED; 4332 return ret; 4333 } 4334 4335 if (!mr_device_priv_data) { 4336 sdev_printk(KERN_INFO, scmd->device, "device been deleted! " 4337 "scmd(%p)\n", scmd); 4338 scmd->result = DID_NO_CONNECT << 16; 4339 ret = SUCCESS; 4340 goto out; 4341 } 4342 4343 4344 if (!mr_device_priv_data->is_tm_capable) { 4345 ret = FAILED; 4346 goto out; 4347 } 4348 4349 mutex_lock(&instance->reset_mutex); 4350 4351 smid = megasas_fusion_smid_lookup(scmd); 4352 4353 if (!smid) { 4354 ret = SUCCESS; 4355 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is" 4356 " issued is not found in oustanding commands\n"); 4357 mutex_unlock(&instance->reset_mutex); 4358 goto out; 4359 } 4360 4361 devhandle = megasas_get_tm_devhandle(scmd->device); 4362 4363 if (devhandle == (u16)ULONG_MAX) { 4364 ret = SUCCESS; 4365 sdev_printk(KERN_INFO, scmd->device, 4366 "task abort issued for invalid devhandle\n"); 4367 mutex_unlock(&instance->reset_mutex); 4368 goto out; 4369 } 4370 sdev_printk(KERN_INFO, scmd->device, 4371 "attempting task abort! scmd(%p) tm_dev_handle 0x%x\n", 4372 scmd, devhandle); 4373 4374 mr_device_priv_data->tm_busy = 1; 4375 ret = megasas_issue_tm(instance, devhandle, 4376 scmd->device->channel, scmd->device->id, smid, 4377 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, 4378 mr_device_priv_data); 4379 mr_device_priv_data->tm_busy = 0; 4380 4381 mutex_unlock(&instance->reset_mutex); 4382 out: 4383 sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n", 4384 ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd); 4385 4386 return ret; 4387 } 4388 4389 /* 4390 * megasas_reset_target_fusion : target reset function for fusion adapters 4391 * scmd: SCSI command pointer 4392 * 4393 * Returns SUCCESS if all commands associated with target aborted else FAILED 4394 */ 4395 4396 int megasas_reset_target_fusion(struct scsi_cmnd *scmd) 4397 { 4398 4399 struct megasas_instance *instance; 4400 int ret = FAILED; 4401 u16 devhandle; 4402 struct fusion_context *fusion; 4403 struct MR_PRIV_DEVICE *mr_device_priv_data; 4404 mr_device_priv_data = scmd->device->hostdata; 4405 4406 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4407 fusion = instance->ctrl_context; 4408 4409 sdev_printk(KERN_INFO, scmd->device, 4410 "target reset called for scmd(%p)\n", scmd); 4411 4412 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 4413 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL," 4414 "SCSI host:%d\n", instance->host->host_no); 4415 ret = FAILED; 4416 return ret; 4417 } 4418 4419 if (!mr_device_priv_data) { 4420 sdev_printk(KERN_INFO, scmd->device, "device been deleted! " 4421 "scmd(%p)\n", scmd); 4422 scmd->result = DID_NO_CONNECT << 16; 4423 ret = SUCCESS; 4424 goto out; 4425 } 4426 4427 4428 if (!mr_device_priv_data->is_tm_capable) { 4429 ret = FAILED; 4430 goto out; 4431 } 4432 4433 mutex_lock(&instance->reset_mutex); 4434 devhandle = megasas_get_tm_devhandle(scmd->device); 4435 4436 if (devhandle == (u16)ULONG_MAX) { 4437 ret = SUCCESS; 4438 sdev_printk(KERN_INFO, scmd->device, 4439 "target reset issued for invalid devhandle\n"); 4440 mutex_unlock(&instance->reset_mutex); 4441 goto out; 4442 } 4443 4444 sdev_printk(KERN_INFO, scmd->device, 4445 "attempting target reset! scmd(%p) tm_dev_handle 0x%x\n", 4446 scmd, devhandle); 4447 mr_device_priv_data->tm_busy = 1; 4448 ret = megasas_issue_tm(instance, devhandle, 4449 scmd->device->channel, scmd->device->id, 0, 4450 MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 4451 mr_device_priv_data); 4452 mr_device_priv_data->tm_busy = 0; 4453 mutex_unlock(&instance->reset_mutex); 4454 out: 4455 scmd_printk(KERN_NOTICE, scmd, "megasas: target reset %s!!\n", 4456 (ret == SUCCESS) ? "SUCCESS" : "FAILED"); 4457 4458 return ret; 4459 } 4460 4461 /*SRIOV get other instance in cluster if any*/ 4462 struct megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance) 4463 { 4464 int i; 4465 4466 for (i = 0; i < MAX_MGMT_ADAPTERS; i++) { 4467 if (megasas_mgmt_info.instance[i] && 4468 (megasas_mgmt_info.instance[i] != instance) && 4469 megasas_mgmt_info.instance[i]->requestorId && 4470 megasas_mgmt_info.instance[i]->peerIsPresent && 4471 (memcmp((megasas_mgmt_info.instance[i]->clusterId), 4472 instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0)) 4473 return megasas_mgmt_info.instance[i]; 4474 } 4475 return NULL; 4476 } 4477 4478 /* Check for a second path that is currently UP */ 4479 int megasas_check_mpio_paths(struct megasas_instance *instance, 4480 struct scsi_cmnd *scmd) 4481 { 4482 struct megasas_instance *peer_instance = NULL; 4483 int retval = (DID_REQUEUE << 16); 4484 4485 if (instance->peerIsPresent) { 4486 peer_instance = megasas_get_peer_instance(instance); 4487 if ((peer_instance) && 4488 (atomic_read(&peer_instance->adprecovery) == 4489 MEGASAS_HBA_OPERATIONAL)) 4490 retval = (DID_NO_CONNECT << 16); 4491 } 4492 return retval; 4493 } 4494 4495 /* Core fusion reset function */ 4496 int megasas_reset_fusion(struct Scsi_Host *shost, int reason) 4497 { 4498 int retval = SUCCESS, i, j, convert = 0; 4499 struct megasas_instance *instance; 4500 struct megasas_cmd_fusion *cmd_fusion, *r1_cmd; 4501 struct fusion_context *fusion; 4502 u32 abs_state, status_reg, reset_adapter; 4503 u32 io_timeout_in_crash_mode = 0; 4504 struct scsi_cmnd *scmd_local = NULL; 4505 struct scsi_device *sdev; 4506 int ret_target_prop = DCMD_FAILED; 4507 bool is_target_prop = false; 4508 4509 instance = (struct megasas_instance *)shost->hostdata; 4510 fusion = instance->ctrl_context; 4511 4512 mutex_lock(&instance->reset_mutex); 4513 4514 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 4515 dev_warn(&instance->pdev->dev, "Hardware critical error, " 4516 "returning FAILED for scsi%d.\n", 4517 instance->host->host_no); 4518 mutex_unlock(&instance->reset_mutex); 4519 return FAILED; 4520 } 4521 status_reg = instance->instancet->read_fw_status_reg(instance->reg_set); 4522 abs_state = status_reg & MFI_STATE_MASK; 4523 4524 /* IO timeout detected, forcibly put FW in FAULT state */ 4525 if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf && 4526 instance->crash_dump_app_support && reason) { 4527 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, " 4528 "forcibly FAULT Firmware\n"); 4529 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4530 status_reg = readl(&instance->reg_set->doorbell); 4531 writel(status_reg | MFI_STATE_FORCE_OCR, 4532 &instance->reg_set->doorbell); 4533 readl(&instance->reg_set->doorbell); 4534 mutex_unlock(&instance->reset_mutex); 4535 do { 4536 ssleep(3); 4537 io_timeout_in_crash_mode++; 4538 dev_dbg(&instance->pdev->dev, "waiting for [%d] " 4539 "seconds for crash dump collection and OCR " 4540 "to be done\n", (io_timeout_in_crash_mode * 3)); 4541 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) && 4542 (io_timeout_in_crash_mode < 80)); 4543 4544 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) { 4545 dev_info(&instance->pdev->dev, "OCR done for IO " 4546 "timeout case\n"); 4547 retval = SUCCESS; 4548 } else { 4549 dev_info(&instance->pdev->dev, "Controller is not " 4550 "operational after 240 seconds wait for IO " 4551 "timeout case in FW crash dump mode\n do " 4552 "OCR/kill adapter\n"); 4553 retval = megasas_reset_fusion(shost, 0); 4554 } 4555 return retval; 4556 } 4557 4558 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 4559 del_timer_sync(&instance->sriov_heartbeat_timer); 4560 set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 4561 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING); 4562 instance->instancet->disable_intr(instance); 4563 megasas_sync_irqs((unsigned long)instance); 4564 4565 /* First try waiting for commands to complete */ 4566 if (megasas_wait_for_outstanding_fusion(instance, reason, 4567 &convert)) { 4568 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4569 dev_warn(&instance->pdev->dev, "resetting fusion " 4570 "adapter scsi%d.\n", instance->host->host_no); 4571 if (convert) 4572 reason = 0; 4573 4574 if (megasas_dbg_lvl & OCR_LOGS) 4575 dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n"); 4576 4577 /* Now return commands back to the OS */ 4578 for (i = 0 ; i < instance->max_scsi_cmds; i++) { 4579 cmd_fusion = fusion->cmd_list[i]; 4580 /*check for extra commands issued by driver*/ 4581 if (instance->adapter_type == VENTURA_SERIES) { 4582 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds]; 4583 megasas_return_cmd_fusion(instance, r1_cmd); 4584 } 4585 scmd_local = cmd_fusion->scmd; 4586 if (cmd_fusion->scmd) { 4587 if (megasas_dbg_lvl & OCR_LOGS) { 4588 sdev_printk(KERN_INFO, 4589 cmd_fusion->scmd->device, "SMID: 0x%x\n", 4590 cmd_fusion->index); 4591 scsi_print_command(cmd_fusion->scmd); 4592 } 4593 4594 scmd_local->result = 4595 megasas_check_mpio_paths(instance, 4596 scmd_local); 4597 if (instance->ldio_threshold && 4598 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) 4599 atomic_dec(&instance->ldio_outstanding); 4600 megasas_return_cmd_fusion(instance, cmd_fusion); 4601 scsi_dma_unmap(scmd_local); 4602 scmd_local->scsi_done(scmd_local); 4603 } 4604 } 4605 4606 atomic_set(&instance->fw_outstanding, 0); 4607 4608 status_reg = instance->instancet->read_fw_status_reg( 4609 instance->reg_set); 4610 abs_state = status_reg & MFI_STATE_MASK; 4611 reset_adapter = status_reg & MFI_RESET_ADAPTER; 4612 if (instance->disableOnlineCtrlReset || 4613 (abs_state == MFI_STATE_FAULT && !reset_adapter)) { 4614 /* Reset not supported, kill adapter */ 4615 dev_warn(&instance->pdev->dev, "Reset not supported" 4616 ", killing adapter scsi%d.\n", 4617 instance->host->host_no); 4618 megaraid_sas_kill_hba(instance); 4619 instance->skip_heartbeat_timer_del = 1; 4620 retval = FAILED; 4621 goto out; 4622 } 4623 4624 /* Let SR-IOV VF & PF sync up if there was a HB failure */ 4625 if (instance->requestorId && !reason) { 4626 msleep(MEGASAS_OCR_SETTLE_TIME_VF); 4627 goto transition_to_ready; 4628 } 4629 4630 /* Now try to reset the chip */ 4631 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) { 4632 4633 if (instance->instancet->adp_reset 4634 (instance, instance->reg_set)) 4635 continue; 4636 transition_to_ready: 4637 /* Wait for FW to become ready */ 4638 if (megasas_transition_to_ready(instance, 1)) { 4639 dev_warn(&instance->pdev->dev, 4640 "Failed to transition controller to ready for " 4641 "scsi%d.\n", instance->host->host_no); 4642 if (instance->requestorId && !reason) 4643 goto fail_kill_adapter; 4644 else 4645 continue; 4646 } 4647 megasas_reset_reply_desc(instance); 4648 megasas_fusion_update_can_queue(instance, OCR_CONTEXT); 4649 4650 if (megasas_ioc_init_fusion(instance)) { 4651 if (instance->requestorId && !reason) 4652 goto fail_kill_adapter; 4653 else 4654 continue; 4655 } 4656 4657 if (megasas_get_ctrl_info(instance)) { 4658 dev_info(&instance->pdev->dev, 4659 "Failed from %s %d\n", 4660 __func__, __LINE__); 4661 megaraid_sas_kill_hba(instance); 4662 retval = FAILED; 4663 goto out; 4664 } 4665 4666 megasas_refire_mgmt_cmd(instance); 4667 4668 /* Reset load balance info */ 4669 if (fusion->load_balance_info) 4670 memset(fusion->load_balance_info, 0, 4671 (sizeof(struct LD_LOAD_BALANCE_INFO) * 4672 MAX_LOGICAL_DRIVES_EXT)); 4673 4674 if (!megasas_get_map_info(instance)) 4675 megasas_sync_map_info(instance); 4676 4677 megasas_setup_jbod_map(instance); 4678 4679 /* reset stream detection array */ 4680 if (instance->adapter_type == VENTURA_SERIES) { 4681 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) { 4682 memset(fusion->stream_detect_by_ld[j], 4683 0, sizeof(struct LD_STREAM_DETECT)); 4684 fusion->stream_detect_by_ld[j]->mru_bit_map 4685 = MR_STREAM_BITMAP; 4686 } 4687 } 4688 4689 clear_bit(MEGASAS_FUSION_IN_RESET, 4690 &instance->reset_flags); 4691 instance->instancet->enable_intr(instance); 4692 4693 shost_for_each_device(sdev, shost) { 4694 if ((instance->tgt_prop) && 4695 (instance->nvme_page_size)) 4696 ret_target_prop = megasas_get_target_prop(instance, sdev); 4697 4698 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false; 4699 megasas_set_dynamic_target_properties(sdev, is_target_prop); 4700 } 4701 4702 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 4703 4704 dev_info(&instance->pdev->dev, "Interrupts are enabled and" 4705 " controller is OPERATIONAL for scsi:%d\n", 4706 instance->host->host_no); 4707 4708 /* Restart SR-IOV heartbeat */ 4709 if (instance->requestorId) { 4710 if (!megasas_sriov_start_heartbeat(instance, 0)) 4711 megasas_start_timer(instance); 4712 else 4713 instance->skip_heartbeat_timer_del = 1; 4714 } 4715 4716 if (instance->crash_dump_drv_support && 4717 instance->crash_dump_app_support) 4718 megasas_set_crash_dump_params(instance, 4719 MR_CRASH_BUF_TURN_ON); 4720 else 4721 megasas_set_crash_dump_params(instance, 4722 MR_CRASH_BUF_TURN_OFF); 4723 4724 retval = SUCCESS; 4725 4726 /* Adapter reset completed successfully */ 4727 dev_warn(&instance->pdev->dev, 4728 "Reset successful for scsi%d.\n", 4729 instance->host->host_no); 4730 4731 goto out; 4732 } 4733 fail_kill_adapter: 4734 /* Reset failed, kill the adapter */ 4735 dev_warn(&instance->pdev->dev, "Reset failed, killing " 4736 "adapter scsi%d.\n", instance->host->host_no); 4737 megaraid_sas_kill_hba(instance); 4738 instance->skip_heartbeat_timer_del = 1; 4739 retval = FAILED; 4740 } else { 4741 /* For VF: Restart HB timer if we didn't OCR */ 4742 if (instance->requestorId) { 4743 megasas_start_timer(instance); 4744 } 4745 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 4746 instance->instancet->enable_intr(instance); 4747 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 4748 } 4749 out: 4750 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 4751 mutex_unlock(&instance->reset_mutex); 4752 return retval; 4753 } 4754 4755 /* Fusion Crash dump collection work queue */ 4756 void megasas_fusion_crash_dump_wq(struct work_struct *work) 4757 { 4758 struct megasas_instance *instance = 4759 container_of(work, struct megasas_instance, crash_init); 4760 u32 status_reg; 4761 u8 partial_copy = 0; 4762 4763 4764 status_reg = instance->instancet->read_fw_status_reg(instance->reg_set); 4765 4766 /* 4767 * Allocate host crash buffers to copy data from 1 MB DMA crash buffer 4768 * to host crash buffers 4769 */ 4770 if (instance->drv_buf_index == 0) { 4771 /* Buffer is already allocated for old Crash dump. 4772 * Do OCR and do not wait for crash dump collection 4773 */ 4774 if (instance->drv_buf_alloc) { 4775 dev_info(&instance->pdev->dev, "earlier crash dump is " 4776 "not yet copied by application, ignoring this " 4777 "crash dump and initiating OCR\n"); 4778 status_reg |= MFI_STATE_CRASH_DUMP_DONE; 4779 writel(status_reg, 4780 &instance->reg_set->outbound_scratch_pad); 4781 readl(&instance->reg_set->outbound_scratch_pad); 4782 return; 4783 } 4784 megasas_alloc_host_crash_buffer(instance); 4785 dev_info(&instance->pdev->dev, "Number of host crash buffers " 4786 "allocated: %d\n", instance->drv_buf_alloc); 4787 } 4788 4789 /* 4790 * Driver has allocated max buffers, which can be allocated 4791 * and FW has more crash dump data, then driver will 4792 * ignore the data. 4793 */ 4794 if (instance->drv_buf_index >= (instance->drv_buf_alloc)) { 4795 dev_info(&instance->pdev->dev, "Driver is done copying " 4796 "the buffer: %d\n", instance->drv_buf_alloc); 4797 status_reg |= MFI_STATE_CRASH_DUMP_DONE; 4798 partial_copy = 1; 4799 } else { 4800 memcpy(instance->crash_buf[instance->drv_buf_index], 4801 instance->crash_dump_buf, CRASH_DMA_BUF_SIZE); 4802 instance->drv_buf_index++; 4803 status_reg &= ~MFI_STATE_DMADONE; 4804 } 4805 4806 if (status_reg & MFI_STATE_CRASH_DUMP_DONE) { 4807 dev_info(&instance->pdev->dev, "Crash Dump is available,number " 4808 "of copied buffers: %d\n", instance->drv_buf_index); 4809 instance->fw_crash_buffer_size = instance->drv_buf_index; 4810 instance->fw_crash_state = AVAILABLE; 4811 instance->drv_buf_index = 0; 4812 writel(status_reg, &instance->reg_set->outbound_scratch_pad); 4813 readl(&instance->reg_set->outbound_scratch_pad); 4814 if (!partial_copy) 4815 megasas_reset_fusion(instance->host, 0); 4816 } else { 4817 writel(status_reg, &instance->reg_set->outbound_scratch_pad); 4818 readl(&instance->reg_set->outbound_scratch_pad); 4819 } 4820 } 4821 4822 4823 /* Fusion OCR work queue */ 4824 void megasas_fusion_ocr_wq(struct work_struct *work) 4825 { 4826 struct megasas_instance *instance = 4827 container_of(work, struct megasas_instance, work_init); 4828 4829 megasas_reset_fusion(instance->host, 0); 4830 } 4831 4832 /* Allocate fusion context */ 4833 int 4834 megasas_alloc_fusion_context(struct megasas_instance *instance) 4835 { 4836 struct fusion_context *fusion; 4837 4838 instance->ctrl_context = kzalloc(sizeof(struct fusion_context), 4839 GFP_KERNEL); 4840 if (!instance->ctrl_context) { 4841 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 4842 __func__, __LINE__); 4843 return -ENOMEM; 4844 } 4845 4846 fusion = instance->ctrl_context; 4847 4848 fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT * 4849 sizeof(LD_SPAN_INFO)); 4850 fusion->log_to_span = 4851 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 4852 fusion->log_to_span_pages); 4853 if (!fusion->log_to_span) { 4854 fusion->log_to_span = 4855 vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT, 4856 sizeof(LD_SPAN_INFO))); 4857 if (!fusion->log_to_span) { 4858 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 4859 __func__, __LINE__); 4860 return -ENOMEM; 4861 } 4862 } 4863 4864 fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT * 4865 sizeof(struct LD_LOAD_BALANCE_INFO)); 4866 fusion->load_balance_info = 4867 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 4868 fusion->load_balance_info_pages); 4869 if (!fusion->load_balance_info) { 4870 fusion->load_balance_info = 4871 vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT, 4872 sizeof(struct LD_LOAD_BALANCE_INFO))); 4873 if (!fusion->load_balance_info) 4874 dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, " 4875 "continuing without Load Balance support\n"); 4876 } 4877 4878 return 0; 4879 } 4880 4881 void 4882 megasas_free_fusion_context(struct megasas_instance *instance) 4883 { 4884 struct fusion_context *fusion = instance->ctrl_context; 4885 4886 if (fusion) { 4887 if (fusion->load_balance_info) { 4888 if (is_vmalloc_addr(fusion->load_balance_info)) 4889 vfree(fusion->load_balance_info); 4890 else 4891 free_pages((ulong)fusion->load_balance_info, 4892 fusion->load_balance_info_pages); 4893 } 4894 4895 if (fusion->log_to_span) { 4896 if (is_vmalloc_addr(fusion->log_to_span)) 4897 vfree(fusion->log_to_span); 4898 else 4899 free_pages((ulong)fusion->log_to_span, 4900 fusion->log_to_span_pages); 4901 } 4902 4903 kfree(fusion); 4904 } 4905 } 4906 4907 struct megasas_instance_template megasas_instance_template_fusion = { 4908 .enable_intr = megasas_enable_intr_fusion, 4909 .disable_intr = megasas_disable_intr_fusion, 4910 .clear_intr = megasas_clear_intr_fusion, 4911 .read_fw_status_reg = megasas_read_fw_status_reg_fusion, 4912 .adp_reset = megasas_adp_reset_fusion, 4913 .check_reset = megasas_check_reset_fusion, 4914 .service_isr = megasas_isr_fusion, 4915 .tasklet = megasas_complete_cmd_dpc_fusion, 4916 .init_adapter = megasas_init_adapter_fusion, 4917 .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion, 4918 .issue_dcmd = megasas_issue_dcmd_fusion, 4919 }; 4920